Key points of manufacturing process and processing technology of JIS G3113 SAPH440 steel plate

Manufacturing process and processing technology of JIS G3113 SAPH440 steel plate:

Manufacturing process points:
1. Selection of raw materials: Select high-quality raw materials that meet the requirements of JIS G3113 standard to ensure product quality.

2. Melting: Use electric arc furnace or other furnace type for melting, control alloy composition and gas content, and ensure that the chemical composition of steel meets the standard.

3. Continuous casting: obtain uniform slab through continuous casting process to ensure the smooth progress of subsequent rolling process.

4. Hot rolling: Using high temperature rolling process, the slab is rolled into SAPH440 steel plate that meets the specifications, and the rolling temperature and deformation are controlled.

5. Surface treatment: According to the needs of the steel plate cleaning, oil removal, shot blasting and other surface treatment process, to prepare for subsequent processing and application.

Processing technology key points:
1. Cold forming: It is suitable for cold bending, stamping, drawing and other processing processes of SAPH440 steel plate. Pay attention to controlling temperature and deformation to avoid cracks and insufficient plastic deformation.

2. Welding: Adopt appropriate welding methods, such as argon arc welding, resistance welding, etc., pay attention to preheating, welding parameters and post-welding treatment to ensure weld quality and connection reliability.

3. Cutting: flame cutting, plasma cutting, laser cutting and other methods can be used for cutting processing to ensure that the incision is smooth and smooth.

4. Heat treatment: According to the need for heat treatment process, regulate the structure and performance of SAPH440 steel plate, improve the strength and toughness of the material.

5. Coating: Implement anti-corrosion coating process to protect the surface of SAPH440 steel plate and extend its service life.

The above process and technical points are essential for the production and processing of JIS G3113 SAPH440 steel plates to ensure that product quality and performance meet the design requirements and meet the needs of specific application scenarios.