High-toughness super abrasion-proof nonmagnetic stainless steel wire for coal screen and preparation method thereof
A super wear-resistant, stainless coal technology, applied in the structural material of mining equipment, high toughness super wear-resistant non-magnetic stainless coal screen steel wire field, can solve the problem of difficult welding, uneconomical, not very good wear resistance, etc. problem, to achieve the effect of improving tensile strength and wear resistance, improving service life and easy product realization
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[0028] In the above preparation method, vanadium (V) and tungsten (W) or one of them in the steel is introduced as a modifier element, and its unique dispersibility can prevent the growth of the structure grains to obtain the original structure as fine crystals; After multiple superimposed processing and deformation technologies, the grains are broken and reorganized, and the continuous on-line heat treatment technology of rapid heating and cooling is used to prepare ultra-fine-grained basic strength steel; the ultra-fine-grained basic strength steel is deformed after reprocessing, and the grains Distortion, cracking, deformation control not more than 30%, under the action of deformation stress, smaller crystal grains will precipitate carbon, carbon and vanadium form compounds (VC); chromium nitride, manganese nitride, iron nitride and other nitrogen Compounds and carbides are dispersed on the grain boundary to obtain the unique effect of high strength and wear resistance.
[002...
Embodiment 1
[0032] 1. Smelting
[0033] 1) Select 1Cr17 ferrite material for scrap steel, and control the content of silicon, phosphorus and sulfur at 0.6%, 0.04%, and 0.02% respectively;
[0034] 2) Add manganese nitride and nickel plates, then add electrolytic manganese; smelt in a 2-ton intermediate frequency furnace;
[0035] 3) The smelting inspection composition after smelting is shown in Table 1 below;
[0036] 4) Die casting 500 kg ingot;
[0037] Table 1 New steel grade smelting composition wt%
[0038] materialC Si MnPSCr NiVN New steel grade0.1130.6813.250.03260.010217.36 / 0.30.323
[0039] 2. Hot rolled wire rod
[0040] 1) Steel ingot heating, the process is shown in Table 2 below
[0041] Table 2 Steel ingot heating process
[0042] Preheat temperature / time Heating temperature / time Soaking temperature / time Baking temperature Rolling temperature ≤800℃ / 180min 1220℃ / 50min 1200℃ / 20min1180℃1160℃
[0043] 2) Wire rod sampling inspection, performance see Table 3 below
[0044] Table 3 Mec...
Embodiment 2
[0056] 1. Metal smelting
[0057] 1) 1Cr13 martensite is used for scrap steel, and the content of silicon, phosphorus and sulfur is controlled at 0.6%, 0.04%, and 0.02%;
[0058] 2) Add ferrosilicon, manganese nitride, nickel plate and electrolytic manganese, smelt in a 6-ton intermediate frequency furnace;
[0059] 3) After smelting, the inspection results of the melting composition are shown in Table 6 below;
[0060] 4) 500kg die cast steel ingot;
[0061] Table 6 Smelting composition of new steel grades
[0062] materialC Si MnPSCr NiVN New steel 20.1530.73013.100.03490.015017.03 / 0.60.404
[0063] 2. Hot rolled wire rod
[0064] The process is the same as in the first embodiment.
[0065] Wire rod sampling and inspection of mechanical properties are shown in Table 7 below:
[0066] Table 7 Mechanical properties
[0067] Steel type Tensile strength MPa Yield strength MPa Elongation% Area shrinkage% HB New steel 29956854466295
[0068] 3. Steel wire preparation
[0069] The process...
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