Cutting machine blade materials are divided into three categories: carbon tool steel, low alloy tools, alloy tool steel, etc..
Carbon structural steel is generally used in 65, 75, steel, T8, T10 material and the material production of blade heat treatment hardness of hrc57 or - 59 degrees range, and is applicable to ordinary low carbon cold rolled steel sheet, ordinary A3 material and waste recycling shear, this characteristic is low cost, product price appropriate.
Low alloy tool steel blade commonly used materials: 6Crw2sI, Cr5, O, 9CrSi, Cr12MoV etc., blade heat treatment hardness hrc58 - 62 degrees range designed stainless steel scissors, suitable for hot rolled plate, stainless steel, plate shear.
Alloy tool steel shear blade material are: 4Cr5MoSiV1 (H13K), 7Cr7Mo2V2Si9 (LD), W6Mo5Cr4V2 (6542) H13: and so on. This material is used for hot rolling steel billet, hot shear, thick steel plate, which is characterized by high temperature resistance, not easy to anneal, for the hot rolling of steel mills, hot shear process.
Note: cutting machine blade material to shear production process is very important, all kinds of high hardness high speed steel in ordinary high-speed steel added some alloy elements, such as Si, Cr, Mo the fatigue resistance, heat resistance, abrasion resistance have further improved.
: H13 blade shears, H13 (4Cr5MoSiV1) that the United States steel H13, with high thermal strength and hot hardness. Under mesophilic condition has good toughness, thermal fatigue resistance and the wear resistance. So the price is higher, suitable for manufacturing punching, rolling and slitting, plate of all kinds of knives. In shear 5-15mm stainless steel or 5-25 Pu board and low alloy plate, the effect is obviously better than that of 6CrW2Si, other tool material is a material with wide application.
2: Cr12MoV blade shears, compared with Cr12 Steel containing low carbon content and adding proper amount of Mo and V, carbide nonuniformity has accumulated can reduce the segregation of carbide and improve the hardenability of improvement, V is grain refinement increases the toughness and wear resistance.Cr12MoV steel with high hardenability, section below 400mm can fully hardened through, 300 to 400 DEG C can still maintain good hardness and wear resistance. Compared with the Cr12 Steel has high toughness, small amount of volume change when quenching and high wear resistance and good comprehensive mechanical properties. Suitable for manufacturing large load, high temperature of all kinds of knives, die.
Three: 6CrW2Si cutter blade, the price is higher than 9CrSi, high speed steel to join W can improve the thermal stability of materials, room temperature and high temperature hardness and antioxidant capacity.
Four: 9CrSi blade shears, room temperature hardness of 67 to 69HRC, 600 degrees of hardness reached 54 ~ 55HRC, shear performance and high speed steel T8, performance than T8 good. However, the price is slightly higher point, making shearing knife allows the cutting speed for 1.67m/s. because it contains CR more, its production and processing more complex, and heat sensitivity, oxidation and decarburization larger, when used to grasp the good heat treatment range.
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