Brief introduction to the quality of spring steel bar materials

The effect of size and size In the 25 complaints of unexplained fracture failure, most of them focused on large-size wire rods ><11mm, indicating significant dimensional effects. The large-size wire rod processing state is hard, the uniformity of the structure and the proportion of the sorbite body are low, so that the internal stress and the relative brittleness are large, and the drawing and winding stress required for the drawing and the winding spring deformation are large. It is easy to reach the tensile limit of the material and break. For large specifications, it can be directly cold deformed, depending on the overall quality performance of the material. However, it is certain that the larger the specification, the lower the cold plastic deformation ability and the greater the fracture sensitivity, so it needs to be strictly controlled in production. According to the usage and complaints of most customers, the current specifications can be directly cold-drawn springs under <14mm, but it is necessary to ensure proper organization and internal stress, and >14mm, it is recommended that users use annealing or heat. Forming around. The influence of surface quality on the surface of severe cracks, bumps, folds and other defects, their existence must be the origin of the material failure, easily lead to material fracture.

The management of the cause of the complaint analyzes the quality of the problem. The multiple problems occur repeatedly and no effective improvement and preventive measures are taken. This indicates that there are problems in management. Quality experts believe that 80% of the quality problems are caused by poor management, the quality of the company is not ideal, reflected in the lack of research and attention to users, lack of long-term clear quality strategy plans and goals, leadership attention to quality and understanding, The lack of quality knowledge and skills of employees, the general lack of quality awareness, and the light weight of production and quality are all important reasons for the low quality of products. Only by managing quality, will the bottleneck of quality improvement be fundamentally solved. power. User complaints are mostly common defects, not only related to the company's process equipment, process control and management, but also insufficient research on user requirements.

Anti Bird Net


Anti-bird net is a kind of polyethylene, high-density polyethylene, polypropylene and nylon which are added with anti-aging and anti-ultraviolet chemical additives. It is a kind of plastic woven mesh and anti bird net has the advantages of high tensile strength, heat resistance, water resistance, corrosion resistance, aging resistance, non-toxic and tasteless, and easy disposal of waste. It can kill common pests such as flies and mosquitoes. The conventional use of the collection is light, and the correct storage life can reach 3-5 years.

Bird-proof net cover cultivation is a new environmentally-friendly agricultural technology that increases production and practicality. It builds artificial isolation barriers on the scaffolding, rejects birds outside the net, cuts off bird breeding routes, and effectively controls various types of birds. Spread and prevent the spread of viral diseases. And it has the functions of light transmission and moderate shading to create favorable conditions for crop growth.

The bird-proof net also has the function of resisting natural disasters such as storm erosion and hail attack.

Beyond garden, the anti bird net also be used in airport, building, residential houses, etc.

Anti Bird Net

Anti Bird Net

Anti Bird Net,Quality Anti Bird Net,Useful Anti Bird Net,Durable Anti Bird Net