Each process of carbon steel investment casting is executed in strict accordance with the Standard Operation Procedure (SOP). The main process of carbon steel investment casting is as the following: Pouring simulation, Mold development, Raw material inspection, Wax pattern, Shell preparation, Metal pouring, Cleaning and Heat treatment, Inspection, Warehouse packaging, and Shipping.
The technical department develops the mold, and the quality department uses the three coordinates to carry out the dimensional inspection.
The workshop uses automatic waxing machines to set the waxing pressure, holding time, etc. and to produce high quality was patterns.
The workshop has 4 automatic production lines, able to produce 1800 sets of shells. We use hygrothermograph, aerometer, and PH to monitor humidity, temperature, and concentration of liquor aluminum chloride.
4 sets of 500KG furnaces are in production, and 3 sets of 500KG spare furnaces are ready when capacity increases. The operators conduct rigorous tests to fulfill material requirements.
The workshop is fully equipped with 8 heat treatment furnaces, 3 quenching furnaces, 1 central shot blasting machine and 11 large shot blasting machines.
All blank dimensions are checked using a CMM. We have rockwell hardness machine, dynamic balance instrument, roundness meter, etc. The company’s quality department has certified employees to do UT, PT, MT testing.
Each process of our carbon steel sand casting is executed in strict accordance with the Standard Operation Procedure (SOP). The main process of carbon steel sand casting is as the following: Pouring simulation, Mold development, Raw material inspection, Modeling (Core-Making), Melting, Metal pouring, Cleaning and Heat treatment, Inspection, Warehouse packaging, and Shipping.
Design and produce molds according to the requirements of the drawings. Generally, wood molds can be used for single-piece production, plastic molds and metal molds are made for mass production. And templates can be made for mass carbon steel castings. Our mold is mainly made of aluminum.
Includes modeling (forming the cavity of the casting with molding sand), core-making (forming the inner shape of the casting), and mold matching (putting the core into the cavity and closing the upper and lower flasks). Modeling is a key process in carbon steel casting.
According to the required metal composition, the chemical composition is matched, and the appropriate melting furnace is selected to melt the alloy material to form a qualified liquid metal liquid (including qualified composition and qualified temperature)
Pour qualified molten metal into the sand box equipped with the mold. The pouring stage has high safety requirement, and we have rigorous process control to protect the safety of our employees.
After the molten metal is poured and solidified, the molding sand is removed, and the gate and other attachments are knocked out to form the required carbon steel casting.
All blank dimensions are checked using a CMM. We have rockwell hardness machine, dynamic balance instrument, roundness meter, etc. The company’s quality department has certified employees to do UT, PT, MT testing.
Mild steel refers to steel with 0.15 to 0.25 percent carbon and not many additional alloying components. Mild steel products are essential. More than half of the common carbon steel products are mild steel casting. Like some mild steel casting samples shown above, Dawang provides you with various mild steel products. Regarding mild steel cost, we will provide you with a satisfactory price. For more information, please consult our mild steel cost service.
Carbon steel casting generally has the following defects:
The reason for the pores is that there is too much water in the molding material or a lot of gas – producing substances; the air permeability of molding sand and core sand is poor; the pouring speed is too fast.
The causes of blisters include insufficient molding sand strength; insufficient molding sand compactness; and too fast pouring speed.
The cause of shrinkage cavity is poor feeding of the casting during solidification.
The cause of sticky sand is the poor fire resistance of the molding sand or the high pouring temperature.
The causes of the cracks are the large difference in the wall thickness of the castings; the improper setting of the gating system; the new difference between the sand mold and the core.
Carbon steel casting grades are divided into three subgroups according to the carbon content of the metal: Low carbon steel castings/Mild steels (up to 0.3% carbon), Medium carbon steel castings(0.3–0.6% carbon), and High carbon steel castings (more than 0.6% carbon).
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