Many fasteners require surface treatment after production to improve their quality and reliability. For example, U-shaped bolts must undergo heat treatment. However, some fasteners are found to be ineffective after heat treatment, which is the main factor affecting the heat treatment effect. There are the following points.
1. Participants Quality control is process control, relying on the cooperation of personnel from various departments. Clarify the responsibilities and powers of all types of personnel, and stipulate that employees must bear the responsibility for solving problems when exercising their rights. It is necessary to organize job training in a planned way, and carry out qualification certification for important positions, so as to improve personnel's operational skills and quality control skills.
2. Equipment tooling There are many types of production equipment tooling for heat treatment of high-strength fasteners, and some measuring instruments are sometimes used. Therefore, operators are required to strictly abide by the operating rules of equipment, tooling and measuring tools, operate civilly, and perform maintenance correctly and reasonably. High-strength fastener heat treatment equipment maintenance personnel should do a good job in daily maintenance and regular maintenance of the equipment, and strictly implement the management system of tooling, workstations and appliances.
3.Fastener materials: In the heat treatment production process, after the materials are processed, transferred, and counted, due to some factors, there may be mixing, wrong materials, loss, rust, bumps, and deformation, which affect the fasteners. The strength of the material. Therefore, we must pay special attention to this aspect, work carefully and carefully, and do a good job of inspection, labeling and storage of materials.
4. Process specification The heat treatment production technology is very theoretical and practical, so it is necessary to have a suitable heat treatment process and a relatively complete operation specification, so that the heat treatment quality can be well controlled. To formulate the heat treatment process, appropriate process parameters should be selected according to the specific high-strength fastener materials and related equipment tooling and the operating skills of the employees. This requires the heat treatment process personnel to be familiar with the production site and continue to confirm the perfect process through practice. And to continue to improve.
