China hardware Stainless steel screw manufacturer

The further optimization of the current product structure is an important strategic shift for fastener companies. The gradual transformation of low-carbon steel hexagon nuts into A194 2H-class nuts mainly producing medium-carbon steel will enable the company to obtain more profitable space. For this reason, the quality has higher requirements on the production process and preparation of nuts. In the face of such structural adjustments, it is necessary to start the formulation of quality control plans and inspection specifications from the following aspects. First, the preparation before the output; The second is the random inspection in the output; Third, the final inspection after delivery. First of all, the pre-production preparation includes: related personnel, equipment status, mold equipment, production process, raw materials, etc. However, the first item involves three major aspects: a, mold preparation; b, inspection method; c, the control of the production process, leading to h

The quality problem of the elongated screw during the tapping process is the tightness of the teeth. The tightness is usually caused by the bending of the straight part of the tapping handle, the dullness of the tapping, the over-tolerance of the effective diameter, and the irregularities of the upper and lower tracks. In view of the reasons for the tightening of the teeth, measures such as orthodontic taps, replacement taps or runway adjustments can be taken. Analysis of screw tapping defects: A. Poor appearance: Poor appearance phenomena include: crooked rod, rough tooth bottom diameter, insufficient teeth, tail teeth not rubbed to the tip of the tail, etc. It can be improved by adjusting the dental plate. B. Poor tooth bottom: For tooth bottom peeling (such as wood screws), you can adjust the quick-entry angle and the upright angle of the fixed tooth plate, and push the quick-entry angle inward appropriately. C. Poor tooth tip (small teeth rolling): Poor tooth tip phenomenon include

 There are many kinds of electroplating of iron combination screws: ordinary and environmentally friendly. For example: color zinc, generally called red color. White zinc, black zinc, white nickel. Blue zinc. There are environmentally friendly color zinc, environmentally friendly white zinc, and environmentally friendly blue zinc. Environmentally friendly white nickel. There are more advanced ones. Nickel on copper, nickel in brine. Tools/Materials Screw wires, iron screw wires include 1010, 1018, 10B21, etc. Stainless steel screw wires include SUS201, SUS304, etc. Steps/Methods The requirements for the material of the combined screw depend on which material is required, whether it is iron or stainless steel. What is the national standard number of the combination screw? There are GB9074.8 and GB9074.4. There are GB9074.13 and so on. The mechanical performance and strength requirements of the combined screw need not be hardened. The level requirements are divided into 4.8 and 8.8 level

 Consumers, as non-professionals, how to protect their own interests to ensure that they do not buy bad screws, screw manufacturers share some tips for selecting screws, hoping to help everyone choose to buy screws. 1. The screw manufacturer tells you that the surface of the good screw is fine and smooth, smooth and regular, and the bad edge is not polished, and there are burrs. If this is the case, try to buy a smooth and good screw; 2. Good quality screws have a long service life. You can ask the manufacturer how much its service life is to decide whether to buy it; 3. The screws shared by the screw manufacturers can fasten objects, machines, and work closely with other things. How to judge the quality of stainless steel screw manufacturers? The screws produced by stainless steel screw manufacturers are widely used in electrician, electrical appliances, lighting and hardware building materials manufacturing industries to make them beautiful, strong, safe and stable. So how do you jud

 Analysis of the causes of rusty hardware screws: 1. When the electroplating factory is electroplating hardware screws, the drying is not done, resulting in residual water vapor. Or, after drying, condensate is formed during packaging. Dongguan Electronic Screw Factory introduces to you, it causes chemical reaction, produces bad occurrence, and causes hardware screw to rust. 2. Stored in a humid place for a long time. Over time, the hardware screws will slowly be corroded and oxidized, causing serious rust. 3. When electroplating hardware screws, the electroplating is poor, and the electroplating layer is too thin. Cause rust. All in all, analyze the reasons from four aspects.   The four directions are: 1. Storage environment 2. Types of electroplating 3. How to save 4. Use environment. Therefore, we must pay attention to the key points in the use of stainless steel screws: 1. The surface of the stainless steel screw adheres to the organic juice (such as melon, vegetable, noodle soup,

Self-tapping screws are often seen in metal plates with relatively thin links (steel plates, saw plates, etc.). Due to the high strength of the threaded surface of the self-tapping screw (≥HRC45), when linking, the self-tapping screw is screwed into the connector that has been made with the threaded bottom hole in advance, so that the inner thread can be tapped in the threaded bottom hole of the link The thread thus completes the connection. There is a special screw that has better working performance than ordinary self-tapping screws and can even replace machine screws-self-tapping pin screws are often used for links between thin metal plates. The difference between it and the ordinary self-tapping screw is the ordinary thread with the arc-shaped triangular interface with higher hardness. This kind of excellent screw with low screwing torque and high locking performance, of course, can also tap the internal thread in the threaded bottom hole to be connected like a normal screw. The wa