Anti-static fabric and other fabrics contrast, in the specific use, the conductive silk in the conductive silk fabric is mainly embedded in the back of the fabric, in order to facilitate the aesthetic and smooth fabric, the back of the fabric is a semiconductor, the front of the fabric is an insulator. Therefore, after the garment is made, the main elimination is the static electricity generated by the friction between the garment and the human body. The static electricity generated by friction with the external equipment cannot be eliminated, and the front of the garment still has charge accumulation. Because the blended fabric is added into the yarn during the weaving process, the front and back sides of the fabric belong to the semiconductor, and the positive and negative charges on the surface of the fabric can be transmitted and canceled each other, which can quickly and uniformly eliminate the human body and clothing. The static electricity generated by the surface of the garment is in contact with the outside world, and the garment has no charge accumulation.
In the oilfield, petrochemical, refining, chemical and other industries, the main purpose of wearing anti-static clothing and related protective equipment is to eliminate static electricity generated by the outside world and the human body, while avoiding charge accumulation and eliminating the safety hazard caused by sparks generated during electrostatic discharge.
Therefore, in most high-risk industries, the protective properties of blended antistatic fabrics have been accepted. The blended anti-static fabric not only improves the anti-static performance, but also reduces the safety hazard.
Anti-static fabric and other fabrics contrast, in the specific use, the conductive silk in the conductive silk fabric is mainly embedded in the back of the fabric, in order to facilitate the aesthetic and smooth fabric, the back of the fabric is a semiconductor, the front of the fabric is an insulator. Therefore, after the garment is made, the main elimination is the static electricity generated by the friction between the garment and the human body. The static electricity generated by friction with the external equipment cannot be eliminated, and the front of the garment still has charge accumulation. Because the blended fabric is added into the yarn during the weaving process, the front and back sides of the fabric belong to the semiconductor, and the positive and negative charges on the surface of the fabric can be transmitted and canceled each other, which can quickly and uniformly eliminate the human body and clothing. The static electricity generated by the surface of the garment is in contact with the outside world, and the garment has no charge accumulation.
In the oilfield, petrochemical, refining, chemical and other industries, the main purpose of wearing anti-static clothing and related protective equipment is to eliminate static electricity generated by the outside world and the human body, while avoiding charge accumulation and eliminating the safety hazard caused by sparks generated during electrostatic discharge.
Therefore, in most high-risk industries, the protective properties of blended antistatic fabrics have been accepted. The blended anti-static fabric not only improves the anti-static performance, but also reduces the safety hazard.
Although there are many types of tapping screws, they all have the following similarities:
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.
Round head Tapping screw,hex tapping screw,flat head tapping screw,pan head tapping screw,truss head tapping screw
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