Casting of steel parts
This company has two induction furnaces of 500 and 300 kg, with a monthly production capacity of 60 tons. Also, using specialized and experienced staff in the field of metallurgy, it has the ability to produce various types of steel and cast iron components (ductile and gray) in the following groups:
- Casting of simple carbon steels, alloy steels such as MO40 VCN 20Mn5 and hot rolled steels.
- Casting of gray and unbreakable cast irons GG25, GG35, GGG40, GGG50, GGG60, GGG70.
- Casting of 304, 316, 304s, L316, Duplex and group 400 stainless steels and fireproof steels such as grate-bars, impellers, caps and etc.
- Casting of heat-resistant steels ASTM A297 HK, HH, HP, HL, HN, Multimet (N-155).
- Casting of abrasion-resistant alloys.
- Manganese Steel (Hod-field), Cream Full Cast Iron, Nye Hard Cast Iron, Benite Steels, ASTM A128, A532.
- Casting of corrosion resistant cast irons such as Siguss ASTM A518, DurIron.
- Casting of Ni-resist Ductile Iron ASTM A436, Ni-resist Gray Iron ASTM A439.
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Casting all kinds of steel parts
Steel casting is one of the oldest stages in the manufacture of steel products.
The steps are as follows:
– Making mold cavities
– The materials are first liquefied by heating in a suitable oven.
The liquid is poured into a prepared mold cavity.
– Allowed to solidify.
– The product is taken out of the mold cavity, cut and shaped.
Other actions to be taken:
1) Prepare template templates
2) Melting and pouring liquefied metal
3) More solidification and cooling to room temperature
4) Defects and inspection
Casting advantages:
Molten material can flow into very small pieces so that complex shapes can use it, and they are made by this process. As a result, many other operations, such as machining and welding, can be minimized.
It is possible to pour almost any material: ferrous or non-ferrous.
The tools needed to cast the molds are very simple and inexpensive. As a result, this process is ideal for small quantities.
Certain parts (such as turbine blades) are made of metals and their alloys. Only in this way can they be processed.
The size and weight of the product is not limited to the casting process.
Limitations:
The accuracy of the dimensions and surface of the castings made by the sand casting processes is a limitation of this method.
Molding process:
Six basic steps in making sand casting:
Build a template
Nucleation
Mould
to melt
Pour
cleaning
Build a template
Pattern: A replica of the part to be cast and used to prepare it
The mold cavity of this physical model is the casting used to make it.
Mold: Made of wood or metal.
The mold is made by packing some aggregate that is easily formed.
Materials, such as sand molding, pattern around it. When the template comes out, it provides the role of that mold hole. This cavity is filled with metal to be turned into a casting. If the casting is to be hollow, there are other patterns called “cores” that are used to form these cavities.
Steps of making sand casting:
Core:
The cores are placed inside the mold cavity to form its inner surfaces so that the empty space is filled with molten metal and eventually filled and cast.
Mould:
Molding is nothing more than mold preparation activities to receive melting
Metal:
Molding usually involves the following: Preparing a composite sand mold around the pattern to be held inside a retaining metal frame. Remove the pattern to the mold cavity. Leave the mold cavity with the core. The mold cavity contains liquid metal.
The mold also has secondary holes for pouring and ducting. Liquid materials enter the primary cavity and act if they are a tank.
Melting and pouring:
The preparation of molten metal for casting is simply mentioned. The melting of molten metal is transferred to the cast area where the molds are filled.
cleaning:
Cleaning involves removing gravel, scale and excess metal from it. Large castings are made in casting pits.
Proper placement of the completed pattern:
Multiple cores can be used for refinement. Forming the pit may take days to weeks. Occasionally, the mold cavity is heated. Slow cooling of the molten metal is allowed so that internal pressures can be minimized.
Advantages of shell molding process:
The surface of the shell mold is softer than ordinary sand.
The mold allows for a smoother flow of molten metal during casting and better.
Production line equipment:
Induction melting furnace
With a capacity of 500 kg of melt, the average frequency of 1 device
With a capacity of 300 kg of melt, the average frequency of 1 device
Continuous mixer
Mixing sand and silicate glue to provide the sand needed for molding
Sand recovery line
to recover and restore the returned sand
Shot blast machine
Strip shot blast machine, with a capacity of 200 kg per charge
Heat treatment furnace
Gas heat treatment furnace with a capacity of 2 tons and dimensions of 2 × 1 × 2 meters