The Characteristics Of Green Sand Casting By: galen | - Green sand casting is one of the most convenient casting methods, which is widely used in foundry industry. This article is intended to introduce the characteristics of green sand casting.
The basic characteristic of green sand casting is that the sand moulds (cores) need no drying or hardening process.
The main advantages of green sand casting are as follows:
1. Flexible production, high productivity, short production cycle, easy to organize continuous pro ... Tags:Characteristics, Green Sand Casting
The Performance Requirements And Testing Methods Of Green Sand By: galen | - High-quality foundry sand should have different and necessary prosperities for good metal castings. According to casting alloy type, casting size, thickness, pouring temperature, metal hydraulic head, sand compaction methods, gating system shape, position, and vents, as well as dry conditions of sand surface and so on, different performance requirements on green sand are proposed.
Application And Mining Of Sand Production Line Equipment Technology By: realjelly | -
With the rapid development of the country, urban construction garbage crusher used in processing, highway, railway construction, urban high-rise construction sand and gravel aggregate,Rock crushers are used broken machinery. In the current building, the level of high-grade highway anti-skid surface layer of asphalt concrete with aggregate require less and less, the increasingly high demand for sand production line,Cement rotating dryer and river gravel, basalt, andesite, and other hard ma ... Tags:sand maker, impact crusher, ball mill, dryer machine, rotary
Iron ore through the rough broken (PE750 1060) broken by the conveyor into the 2 small break (PEX250 1200) crushed to 35mm or less, and then by conveyor into the hopper, silos can be designed according to the situation, the feeder (GZ5, 2 units) were uniformly feed into the mill (2.7 4 m, 2) grinding, mill discharging slag into the classifier, respectively (FG1500 9.5,2 units) classification, classifier points the fine material into the m ... Tags:Iron Ore Beneficiation plant, iron ore beneficiation equipmen
Green Sand, Resin Sand, Shell Molding, Iron And Steel Castings By: galen | - As for the most of metal foundries and casting suppliers in China, the green sand, resin sand and shell molding are the normal production processes, the cast iron and cast steel are the normal casting materials.
1. Green Sand Casting
Most of sand castings were produced by green sand. It is mainly because its low cost, simple production equipments and flexible process. Currently, the green sand rough casting prices are about 1.24 USD/kg for grey iron, 1.35 USD/kg for duc ... Tags:green sand, resin sand, shell molding, iron and steel castin
Green Sand Castings By: galen | - Green sand casting process has been widely used worldwide, and many types of metal castings were produced by this process.
Green sand materials are very cheap and recyclable. They could be used to produce small and middle sizes and weights castings. In addition, this material is also suitable for both small amount and large batch production. However, it is only suitable for making iron castings, not for steel castings.
The followings are some green sand castings produce ... Tags:green, sand castings
The Advantages And Disadvantages Of Wet Green Sand Casting By: galen | - Wet green sand uses clay and moderate amount of water as the main binder, and it is closed and poured directly under wet condition after molding. Wet green sand casting has a long history and wide application. And this article will mainly introduce both the advantages and disadvantages.
Wet green sand casting mainly has five advantages:
Hand Molding Method Of Sand Casting By: galen | - Sand casting production mainly include hand molding and machine molding method. The operation of hand molding is more simple and flexible, but the production rate is low, so it is suitable for small batch, amount production.
Hand Molding (Manual Moulding) Methods
1. Whole pattern, two cases molding
When the largest cross section of casting parts is located on the top position, then this position could be used as the parting surface, and the pattern could b ... Tags:hand molding, method, sand casting
Sand Plant By: Suming | - Sand Plant,Sand Processing Plant
The sand plant reserve came from a old stream bed, that had a 20 to 30 ft thick sand deposit in it. It was sampled and the lab testing revealed that there was less than 0.03% iron, and a few other metals (TiO2, Al2O3, MgO). The sand plant equipment length of the deposit was over a mile, so sufficient reserves were in place to justify a mining operation. The site was permitted and the sand plants was excavated and sand and aggregates.
Initially, the s ... Tags:Sand Plant, Sand Processing Plant
Sand Casting By: galen | - Sand casting means the production processes that need sand as the main molding material, it also means the casting products made by these processes.
1. Casting Process
We need make wooden, resin or metal patterns according to the drawings or samples. Then, we put patterns into the sand boxes, then put green sand or resin sand into the boxes, then make the sand become solid by pressure come from molding machines or manual methods, then take the patterns out, and so, the ... Tags:sand, casting
Foundry Sand Types By: galen | - According to the different binders, foundry sand used for moulding can be divided into green sand, water glass sand and resin sand.
Green Sand (Clay Sand)
Clay sand is the mixture of natural silica sand, clay, additives and water. The clay used to make wet clay sand is bentonite clay. The compressive strength is generally 0.05 to 0.1 Mpa. The water content is 3.5 to 5%, and air permeability is more than 80. It is commonly used in machine molding and hand molding.
... Tags:foundry sand types
Advantages And Disadvantages Of Resin Sand Casting Process By: galen | - Resin sand is a common casting material in foundry industry, so resin sand casting process is a main casting method for iron castings. This article will introduce its advantages and disadvantages to buyers for iron castings.
The advantages of resin sand casting process:
1. The resin sand castings have high dimensional accuracy, and the external outline is clear; the castings have smooth surface, and the appearance is in good quality; the structure is compact, and the castings ... Tags:advantages, disadvantages, resin sand casting process
Sand Casting Process - Green Sand, Resin Sand, Shell Molding, Dry Sand By: galen | - There are many types of casting methods, such as die casting, lost foam casting, permanent mold, continuous mold, lost wax investment casting etc., but sand casting process is still the most common casting process.
Sand casting process means the main molding material is "sand". According to the different sand materials, it can be divided into green sand, resin sand, dry sand and shell molding processes. Herein, we will try to elaborate them.
Aluminium hydroxide minerals are the main component of bauxite, the principal ore of aluminium. After Bauxite stone comes out of the ground, it typically goes on a conveyor belt to a preparation plant that is located at the mining site. The Bauxite plant cleans and processes stone ( washing machine).Then stone were crushed into small ones through primary crushers. After the materials are put into the grinding room of the main equipment, the material is slow ... Tags:Sand Crusher Machine Equipment, Clay Sand Crushing Plant
Cast Steel Vs Ductile Iron By: galen | - In the previous article, we have compared the cast iron and cast steel, herein, we will discuss cast steel versus ductile iron.
1. Chemical components
Ductile iron chemical components include carbon content of 3.0% to 3.9%, but cast steel normally includes 0.08% to 0.60% carbon. So, ductile iron contains higher carbon content than cast steel.
2. Tensile strength
Cast steel and ductile iron do not have big difference with tensile strength, clien ... Tags:cast steel, ductile iron
Cast Iron Costs, Sand Casting Production By: galen | - As for sand castings, the cast iron production costs include many aspects, such as pig iron prices, manpower costs, material costs, machining, heat treatment, painting, packing, foundry coke and sand costs.
1. pig iron costs
Pig iron is the most important material for iron castings, so its costs will take almost half of total production costs. Therefore, its costs will directly affect the change of iron casting prices. Normally, pig iron cost can take about 50% of total ... Tags:cast Iron costs, sand casting production
Abstract: This specification covers gray iron castings exposed to elevated temperatures for non-pressure containing parts such as grate bars, stoker links, stoker parts, oil still furnace parts, firebox parts, ingot molds, glass molds, caustic pots, and metal melting pots. The three classes of gray iron covered here are: Class I, possessing superior thermal ... Tags:ASTM A319, A126, A278 - Standards for Gray Iron Castings
Sand Inclusion, Sand Hole By: galen | - Sand inclusion is also called as sand hole, which is a kind of metal casting defect. It looks like small or middle holes with sand grain in the internal or on the surface of castings.
There are 3 main reasons caused the sand inclusion defect.
1. sand crush, sand drop
The partial sand blocks drop because of the mechanical force on the sand molds or sand cores. It will cause the embossing metal blocks, at the same time, the positions where the sand blocks dro ... Tags:sand inclusion, sand hole
The Surface Quality Of Iron And Steel Castings By: galen | - Surface smoothness and defectives are important quality aspects of iron and steel castings. Some steel casting purchasers may wonder why the surface quality of steel castings is worse than iron castings, such as lower surface smoothness, more surface sand holes, air holes, and sand residuals. Herein, we hope to explain this issue.
We can try to make a comparison list for the surface quality of all normal iron and steel casting processes from best to worst.
The Development And Problems Of Resin Sand Casting Process By: galen | - Resin sand casting began in the 1950s, has now been for decades in foundry industry, and its production technology and equipment has been very mature and improved. Compared with the traditional clay sand castings, resin sand casting products has small surface roughness, high dimensional accuracy, and good quality. Because it has been increasingly favored by the market and developing rapidly, so it has gradually become the mainstream products at the casting market.
What Can Affect The Quality Of Iron Castings? By: galen | - The quality of iron castings is very important to the development of an iron foundry, and there are many elements that influence the quality of iron castings, such as design process, casting process, the quality of raw materials and technological operation.
1. Design process of the iron castings
During the design process, in addition to determine the shape and size of iron castings based on the working conditions and the property of metal materials, we should also consi ... Tags:quality, iron castings
How To Eliminate Sand Hole And Skin Pores In Ductile Iron Castings? By: galen | - Skin pores and sand hole are common metal casting defects, which has a serious impact on their performance. How to eliminate sand hole and skin pores in ductile iron casting? According to the experience of Dandong Foundry, we will start from factors to look for the answers.
1. Water content of sand
The main factors affecting the skin pores is the water content of sand which should be controlled lower. 3 to 5% is the reasonable range (to ensure the performance of wet san ... Tags:eliminate, sand hole, skin pores, ductile iron castings
Steel Buildings Agriculture Commodities By: Armstrong Steel | - Farmers have invested a lot of money for their agriculture commodities so they want their commodities to be protected and placed in storage that will make sure of their safety. They also worry about the future because the places where they are storing their commodities now already show signs of aging and destruction. Steel buildings are the answer to their worries! Reputable manufacturers of American steel buildings appreciate the amount of money they have invested in their commodities that is w ... Tags:Manufacturing ductile cast iron, sand casting,
How To Produce Small Iron Castings By: galen | - In the past, we have talked about how to produce large iron castings, so now, we will talk about some about how to produce small iron castings.
As for small iron castings, we meant gray iron and nodular iron castings with weights less than 2kg.
It is not an easy thing to produce small iron castings, so there are many iron foundries would not like to produce them. The main reasons are because they are too light to reach a large weight volume, and too many pieces will ca ... Tags:how to produce small iron castings
Silica sands are produced from both loosely consolidated sands and weakly cemented sand stones in silica sand crushing plant. Coarse-grained, well- rounded quartz sands are particularly suited for water treatment and are produced by the selective screening of sands form a number of quarries. Construction and silica sands are normally derived from the same quarry and their production is interdependent. Closely-sized water filtration sands are also produced fr ... Tags:silica sand crusher, silica sand processing plant
How To Produce Large Iron Castings By: galen | - In China, there are many iron foundries, who mainly produced large iron castings, such as for the balance weights, ship parts, drying cylinders, machine bases and so on. Therefore, there are many different casting processes for producing large cast iron parts. Herein, we mainly introduced some normal casting methods for them.
1. Resin sand casting process
Resin sand casting process is very common casting method to produce middle size iron castings, unit weight from doze ... Tags:how to produce, large iron castings
Wrought Iron Gates With Their New Designs In The Market By: jennyclifer | - Do you want to want to beautify your house with new ideas and designs? Surely you can opt for something new. You would always want to go for new concepts and themes. Besides maintaining the interior beauty of the house, you would also prefer to ensure a complete security for your dream home.
Since the cost of iron has increased a lot, the customers prefer to opt for wrought iron. It is a good alternative and proves to be much more cheap than iron. You can also find many di ... Tags:Wrought Iron Gates, Spiral Staircases, Gate Hinges
Sand Making Machine And Belt Conveyor By: RealSBM | - In sand making process,Vertical Shaft Impact Crusher and Conveyor Belt machine is very important, Her we describe these two machines in detail. If you want to know more, please visit the source page.
Working Principle of VSI5X Crusher:Vertical Sand Machine
Feed at center: Materials fall into the hopper and then through the central well enter the high speed rotator which will throw out the materials with high speed. Firstly, the materials strike with the materials that are free fallin ... Tags:Sand Making Machine, Belt Conveyor, Vertical Impact Crusher
As 1830 For Grey Cast Iron By: galen | - AS 1830 is an Australia standard for materials of grey cast iron. It is useful for iron casting buyers and suppliers. However, this standard is not as common as ISO and ASTM standards, so we listed some main information of this standard as followings, and provided the cross-references with other popular standards. Hope this could be useful for those iron foundries in China, such as our Dandong Foundry.
This standard is originated as AS B26 - 1942 and AS B89 - 1942. Previous edition ... Tags:AS 1830 for Grey Cast Iron
Welding Cast Iron In China By: galen | - In an iron foundry in China, welding cast iron has been widely used. Such as repairing iron casting defects or used in welded assembly parts for fabrications.
Welding cast iron is used in various places like housing, brake drums, counter weights, pipe fittings, making enclosures, machine forms and bases, and clutch plates etc.
Welding cast iron is a very dedicated works. There are many important issues that need to be paid attention to.
Cast Iron Grills Made In China By: galen | - Cast iron grills are also called as cooking grids in China. Its shapes are round and square. The materials of grills include cast iron and stainless steel. The types of grills include indoor grills and outdoor grills.
Cast iron grills
Cast iron grills can make the barbecue food to keep the original nutrition. The corrosion resistance and heat-resistance of cast iron grills are very good, and it is very strong, non-deformation, so its life time is long. Moreover, cast ir ... Tags:cast iron grills, made in China
The Type Of Iron Foundries In China By: galen | - As everyone knows, China has become the largest metal casting manufacturing country, and have thousands of various metal foundries. Herein, we try to classify the iron foundries into five main types, and hope it could give an approximate concept to the buyers who want to purchase metal castings from China.
1. Large iron foundries
Normally, these type of iron foundries are very professional, and have several automatic molding lines, sophisticated inspection devices, rela ... Tags:type, iron foundries, in China
Cast Iron Plate Made In China By: galen | - Cast iron plate is also called as cast iron flat. Cast iron plate is used for workpiece detection. It is indispensable basic tool in mechanical manufacturing.
In China, you could find many types of cast iron plates, such as inspection plate, crossed flat, measuring platform, assembly plate, welding plate, and basic plate etc.
Cast iron plates are usually made by grey iron ASTM A48 CL 30, CL 35, CL 45, ductile iron ASTM A536 60-40-18, 65-45-12, 70-50-05, 80-60-03. They h ... Tags:cast iron plate, made in China
Factors That Affect Sand Casting Costs By: galen | - There are many factors that will affect the sand casting costs. Herein, we list some main factors, and hope these information could be helpful to casting buyers.
1. Pig iron and steel scrap costs
The pig iron and steel scarp are the main materials to cast iron and cast steel, so their prices will directly affect the costs of sand castings.
2. Alloy costs
If your parts need to add alloys such as Cr, Ni, Cu and Mo, then their prices will be more ... Tags:factors, affect, sand casting costs
Typical Defects Of Ductile Iron Castings By: galen | - The following typical defects of ductile iron castings are based on the experiences of process engineers from Dandong Foundry in China. We hope these information could be helpful for other iron foundries and casting buyers.
1. abnormal and degraded nodularizing
If the ductile iron castings have defects of abnormal and degraded nodularizing, the fracture surfaces will show the grey color with the small black particles. There will be large amount of flaky graphite in the ... Tags:typical defects, ductile iron castings
How To Calculate The Price Of Rough Iron Castings By: galen | - As a buyer for iron castings, you may always wonder how to estimate the reasonable prices of your iron casting parts, to evaluate the quotations from your potential suppliers. Since the machining costs are more complex, so we can not make it clear in one article, but as for the price of rough castings, we can briefly introduce its main aspects.
Rough casting cost means the price for the rough castings without any machining, heat treatment, surface coating, packing and freight costs. ... Tags:calculate, price, rough iron castings
The Differences Of Iron Foundries And Steel Foundries In China By: galen | - In the past, one of our clients asked about the differences of iron foundries and steel foundries in China, herein, I made a brief introduction about this issue, and hope this could be helpful for other metal casting purchasers.
Firstly, both iron and steel foundries are the metal foundries, and they use the similar casting process such as melting pig iron and steel scarps, and then pour the hot liquid metal into casting molds, then after cooling, get the designed metal castings, bu ... Tags:differences, iron foundries, steel foundries, in China
Inspection Methods To Ductile Iron Castings By: galen | - Normal casting defects of ductile iron include some macro-defects, such as air holes, sand inclusion, slag inclusion, shrinkage or shrinkage cavity, and some micro-defects, such as unqualified nodularity rate and too large grain size, etc.
The inspection methods to ductile iron castings include visual inspection, magnetic powder test and ultrasonic test.
Metal Patterns For Sand Castings In China By: galen | - In the quotations of iron castings, you may find the suppliers proposed to use metal patterns for production, so you may be confused about what the metal patterns meant, and why they were so costly. Of course, you may wonder if the metal patterns were necessary for your products. Herein, I make a brief introduction for metal patterns based on my working experience in Dandong Foundry of China.
Firstly, let us learn about the types of metal patterns.
Casting Process Of Grey Iron Belt Pulley By: galen | - Grey iron belt pulley is a kind of iron casting with very high technical requirements. We talked about its casting process by an example of material ASTM A48 CLASS 35, weight 1500 kg and outside diameter 1100mm.
Normally, the belt pulley requires machining to all surfaces, and no defects on the surfaces of grooves and axle hole. The hardness of casting body should be within HB 170 to HB 210.
Reasonable Cast Iron Hardness Range By: galen | - The hardness has large affect to the properties of cast iron. Too low hardness will cause the low tensile strength, reduce the resistance to abrasion, so reduce the lifetime of iron castings. Too high hardness will cause the difficulty to machining, so enlarge the machining time, reduce the life time of cutters, and even can not be machined.
However, what is the reasonable hardness range?
For example, for grey cast iron ASTM A48 NO.20, its 150-200 BH (Brinell hardness) ... Tags:cast iron, hardness range
Gravel Crusher,gravel Crushing Plant-iron Ore Crusher Equipment For Sale By: concrete crusher machine | -
Iron Ore crusher supplier
SBM is a iron ore machine manufacturer in China, and supplies rock crushers and grinding mills for ore beneficiation plant such as iron ore crusher, copper ore crusher, manganese ore crusher. SBM provides iron ore mining equipments for sale with best price in Australia, Brazil, India, Canada, USA, Ukraine, Liberia, Russia, Sweden, France, South Africa and other countries.Jaw crusher for iron ore: Jaw crusher is used in primary crushing station. It ca ... Tags:Iron Ore crusher, Gravel crusher
The Difference Between Green Sand Casting Process And Resin Sand Casting Process By: galen | - In the past, one client asked us the difference between green sand casting process and resin sand casting process. Herein, I make a brief introduction to these two casting processes, and hope it could be helpful for other casting purchasers.
Green sand casting process is screening and mixing the wet sands, and filling the sands into the sand boxes, then use machines or just by workers to tamp the sands, then pouring the liquid iron into the sand molds.
The Equipments Used To Produce Iron Castings In China By: galen | - Many clients visited our Dandong Foundry each month, and we need to introduce the equipments to produce iron castings. So, I want to write an article to introduce these equipments, and hope it could be helpful for buyers to learn about these equipments in China.
1. Molding equipments
A) Manual molding
Most of iron foundries in China could produce the iron castings by manual molding method. In brief, workers make the sand molds only by their hands and sand b ... Tags:equipments, produce, iron castings, in China
The Advantages And Disadvantages Of Green Sand Casting Process By: galen | - Let me briefly introduce the advantages and disadvantages of green sand casting process in China, and hope it could be helpful for casting buyers to learn more about its characters.
Advantages:
In China, green sand casting process is very common, and almost all iron foundries could produce iron castings by this process. Its mainly because of the advantages of this process.
Resin Sand Casting By: galen | - Some clients asked me about the resin sand casting in the past, so herein, I made a brief introduction for its definition and characters, and hope this information could be helpful for the buyers to choose the suitable casting process.
What is resin sand casting?
Resin sand casting process is a kind of floor molding process by using the resin sand as the molding material. Resin sand is a kind of mixture of quartz sand and resin. After mixing and burning, the resin sand ... Tags:Resin Sand Casting
Cast Iron In China By: galen | - Cast iron mainly includes grey iron, ductile iron, malleable iron and austenitic iron. In China, most of iron foundries could produce grey iron and ductile iron, but seldom could produce malleable and austenitic iron.
In China, most of iron foundries could produce the cast iron from grey iron grade 150 to ductile iron grade 600, and only few of them could produce ductile iron upper than grade 600, such as grade 700, 800 and 900 since higher grade will need higher requirements to the ... Tags:Cast Iron
Cast Iron Housing By: galen | - Cast iron housing means the iron castings such as tractor gear boxes, pump bodies and other casings just like a box or house shapes.
Ductile iron series housings weight 40% less in comparison with standard housings made with gray cast iron. Ductile iron series housings are approximately 30% stronger than standard housings made with gray cast iron. Therefore, ductile iron has been more widely used for cast iron housings.
Ductile cast iron housings are designed to be ligh ... Tags:Cast Iron Housing
Sand Castings By: galen | - Sand castings mean the metal castings produced by sand molds. There are many types of sand castings, such as gray iron sand castings, ductile iron sand castings, steel sand castings and aluminum sand castings etc.
There are many types of sands that can be used for sand casting process, including green sand, resin sand, pre-coated resin sand, water glass dry sand etc. Accordingly, the sand casting processes include floor molding, automatic molding and shell molding process. Tags:Sand Castings
Frbiz.com Reported Big Miners Shun China During Iron Ore Price Talks By: Frbiz | - Global miners have sidelined China, their biggest customer, in the annual iron ore price negotiations because of political gridlock over the resource in the industry and government and fears about retribution if the talks collapse.
Vale of Brazil, Rio Tinto and BHP Billiton, the big operators that mine iron ore in Australia, are talking instead to Japanese customers to reach a benchmark agreement that they can present to Beijing on a \"take it or leave it\" basis.
