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Custom Heat Treatment Industry Castings

We provide users with various models of high-temperature heat-resistant steel casting and investment casting accessories, such as mesh belt furnaces, casting chain furnaces, push rod furnaces, box-type trolley resistance furnaces, well-type tempering furnaces, rotary furnaces, etc.

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Xinghua Dongchang Alloy Steel Co., Ltd
Xinghua Dongchang Alloy Steel Co., Ltd (formerly known as Xinghua Dongchang Alloy Steel Plant) was established in August 2006 and is located in the National Torch Plan China Alloy Steel Casting Base. We Are China ODM/OEM Heat Treatment Industry Castings Manufacturers and Custom Heat Treatment Industry Castings Factory. It is a private technology enterprise, high-tech enterprise, member unit of Jiangsu Foundry Association, president unit of Xinghua Foundry Industry Association, and specialized and new small and medium-sized enterprise in Jiangsu Province. Our company is a professional manufacturer of various special alloy steel products that are resistant to damage, corrosion, high temperature, oxidation, etc. The products are widely used in industries such as metallurgy, electricity, cement, machinery, heat treatment, and chemical engineering. The company currently has 136 employees, including 32 with college degrees or above, 12 technical researchers, and a registered capital of 30 million yuan.
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Heat Treatment Industry Castings Industry knowledge

What are the different requirements for heat treatment of castings made of different materials (such as cast iron, cast steel, aluminum alloy, etc.)?

Castings made of different materials have different requirements for heat treatment, mainly because these materials have different chemical compositions and physical properties. The following are the different requirements for heat treatment of some common materials:

Cast iron:

Gray cast iron: Usually no heat treatment is required because it has good casting properties and excellent wear resistance. However, annealing is sometimes performed to remove casting stress and improve cutting performance.

Ductile iron: Heat treatment mainly includes spheroidizing and normalizing to improve its toughness and strength. Spheroidizing makes graphite spherical, thereby improving the mechanical properties of the casting.

Cast steel:

Low alloy cast steel: Usually quenching and tempering are required to improve its strength and toughness. Quenching can increase hardness, while tempering can reduce brittleness and improve toughness.

High alloy cast steel: More complex heat treatment processes may be required, such as high temperature annealing and aging treatment, to optimize the precipitation of alloying elements and hardness.

Aluminum alloy:
Aluminum-silicon alloy: usually undergoes aging treatment (i.e., T6 treatment) to enhance strength and hardness by rapid cooling after treatment at high temperature.
Aluminum-copper alloy: may require solution treatment and aging treatment to evenly distribute alloying elements and improve hardness and strength.

Magnesium alloy:
Magnesium-aluminum alloy: usually requires aging treatment to improve strength. The heat treatment process needs to be controlled at an appropriate temperature and time to avoid high-temperature embrittlement of magnesium alloy.

Stainless steel castings:
Austenitic stainless steel: generally requires solution treatment and aging treatment to improve mechanical properties. Solution treatment is carried out at high temperature to ensure uniform distribution of alloying elements, while aging treatment improves hardness.
Martensitic stainless steel: often undergoes quenching and tempering treatment to improve hardness and strength. During treatment, attention should be paid to temperature control to prevent overheating and performance degradation.

Castings of different materials need to select appropriate processes during heat treatment according to their chemical composition, expected performance, and use environment to ensure that the performance of the final product meets the requirements.