Heat treatment process is divided into primary heat treatment and final heat treatment. Heat treatment process rules or heat treatment process instructions should be prepared, which are omitted here.
Inspection procedure after heat treatment: 1. Name, model or power of equipment and tools or gauges. 2. Test frequency and quantity, test hardness value according to specified parts, etc. 3. Physical and chemical inspection: inspection quantity and frequency, fiber direction, metallography, mechanical properties and crack detection, etc.
Cleaning procedure: 1. Name, model, or power of the device or tool. 2. Forging cleaning time; Cleaning times are generally 1 time/batch; When the cleaning quality does not meet the requirements, the cleaning time can be extended or the number of cleaning can be increased, but the phenomenon of excessive cleaning should be avoided.
Grinding process: 1. Name, model or power of equipment or tool. 2. When the surface of the forging has folding, crack, interlayer, inclusion, scarring and collision defects, local size over difference, flying edge or burr over difference and other phenomena are allowed to grind, the shape and size after grinding should meet the requirements of the forging blank drawing.
Marking procedure: 1. Name, model, or power of the device or tool. 2. Implement the 1 piece 1 system, according to the batch management requirements and the stipulated forgings in the specified position on the batch marking number.
these Chain pole forgings are produced by Tongxin