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The material of stainless steel wire how to identify __ metal wire mesh products co. , LTD

by:Candurs     2020-07-26
Life, use of stainless steel wire used in our life, everyday a ball-point pen to play with, fashion lady handbags on the chain, fan cover, umbrellas used to pull back, hangers, barbecue grill, barbecue fork and so on are all made by different specifications of stainless steel wire, and so today we give you explain what are stainless steel wire material discrimination method. Copper sulfate points test copper sulfate are try to distinguish the ordinary carbon steel, and other types of stainless steel wire simple method, used by the concentration of a solution of copper sulfate is 5% _10 %, before point tests, test area should clean up the oil, or other impurities, cloth or soft grinding polishing and grinding machine, small area, and then try the droplets to burnish, ordinary carbon steel or iron within a few seconds can form a layer of metal copper surface, and test the surface of the stainless steel wire is not produced copper precipitation or display the color of copper. Touch test method magnetic testing method is a common to distinguish the original austenitic stainless steel and ferritic stainless steel of simple method, austenitic stainless steel, nonmagnetic steel but after cold work under big pressure to have mild magnetic; The chrome steel and low alloy steel are strong magnetic steel. Try Xian sulfate acid submerged stainless steel wire to make a distinction between 302 and 304 and 316 and 317. Sample should pass fine grinding, cutting edges and the volume concentration of 20% ~ 30%, the temperature of 60 ~ 66 ℃ in sulphuric acid cleaning and passivation for half an hour, the volume concentration of the sulfuric acid solution was 10%, heated to 71 ℃, when immersed in the solution, 302 and 304 steel corrosion and generate a large number of bubbles, in some kind of black sample; While the sample 316 and 317 steel from corrosion or corrosion slow ( Do not produce bubbles) , the test does not change color within 10 ~ 15 minutes.
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