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Stainless Steel Wire, Also Known As Stainless Steel Wire

Stainless steel wire, also known as stainless steel wire, made of stainless steel for the production of various types of different specifications and models of silk products, the origin of the United States, the Netherlands, Japan, the cross section is generally round or flat. Common corrosion resistance is good, cost-effective stainless steel wire is 304 and 316 stainless steel wire.

Stainless steel wire drawing Draw the wire rod or wire rod from the die hole of the drawing die under the action of drawing force to produce a metal plastic process of a small cross section steel wire or non-ferrous metal wire. All kinds of metal and alloy of different cross-sectional shape and size of the wire can be used to pull production. Pull out the wire, the size of the precise, smooth surface, and the use of drawing equipment and die is simple, easy to manufacture.

In the drawing process, the pull-out stress σ1 of the pulling force on the cross-sectional area of the drawn wire is applied to the die. In order to make the plastic deformation of the metal in the die hole, the tensile stress σ1 must be greater than the deformation resistance of the metal in the deformation zone of the die hole. In order to prevent the wire from being deformed after the die hole is deformed, Pulling process, the tensile stress σ1 must be less than the yield limit σs of the drawn wire after the die hole, so the conditions for realizing the drawing process are usually expressed as: σT <σ1 <σs. The ratio of K to their ratio is called the safety factor of the drawing process.

condition

And the yield limit σs is close to its strength limit σb. In the production, σb is used instead of σs. Therefore, the condition of the drawing process can also be expressed as σT <σ1 < Σs; the safety factor K of the drawing process can also be expressed by the ratio of σb to σ1.

Safety factor

Pulling process safety factor K value is generally in the 1.40 ~ 2.0, K <1.40 that pull stress σ1 is too large, the die hole after the wire may continue to deformation occurs pull or pull off the phenomenon of drawing process is unstable; K> 2.0 shows that the tensile stress σ1 is small, the amount of road drawing deformation is too small, pull the road increased. In the drawing wire diameter of less than 0.05mm ultra-fine wire, wear mold difficult, in order to improve the stability of the drawing process to reduce the number of pull and wear mold to improve the efficiency of drawing production, the safety factor K value can be greater than 2.0.

Process characteristics editor

The stress state of the wire drawing is the three-way principal stress state of the two-way compressive stress, which is easier to reach the plastic deformation state than the three-way compressive stress. The deformation state of the drawing is a three-way main deformation state in which the two-way compression deformation is always torsional deformation, which is disadvantageous to the plasticity of the metal material, and it is easier to produce and expose the surface defects. The deformation of the wire drawing process is limited by the safety factor. The deformation of the wire is small, and the number of passes is much higher. Therefore, the multi-pass continuous high-speed drawing is often used in the production of the wire.

Generally in accordance with the austenite, ferrite, two-way stainless steel and Markov stainless steel, mainly divided into 2 series, 3 series, 4 series, 5 series and 6 series of stainless steel.

316 and 317 stainless steel (317 stainless steel performance see below) is molybdenum stainless steel. 317 stainless steel in the molybdenum content slightly higher in the 316 stainless steel due to the molybdenum steel, the overall performance of the steel is better than 310 and 304 stainless steel, high temperature conditions, when the sulfuric acid concentration of less than 15% and higher than 85% Stainless steel has a wide range of uses. 316 stainless steel also has good resistance to chloride erosion, so it is usually used in marine environments. 316L stainless steel maximum carbon content of 0.03, can be used after welding can not be annealed and the need for maximum corrosion resistance in the use.

Annealing at a temperature in the range of 1850 to 2050 degrees, then rapidly annealing, and then rapidly cooling. 316 stainless steel can not be superheated to harden.

welding

316 stainless steel has good welding performance. All standard welding methods can be used for welding. Welding can be used according to the use of 316Cb, 316L or 309Cb stainless steel filler rod or welding electrodes. For optimum corrosion resistance, 316 stainless steel welded sections require post-weld annealing. If 316L stainless steel is used, no post-weld annealing is required.


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