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A production method and wire cutting technology, applied to the production field of wire cutting molybdenum wire and wire cutting molybdenum wire, can solve the problems of low processing qualification rate, poor consistency, no wear resistance, etc., to improve processing performance, reduce processing difficulty, reduce or the effect of crack generation and propagation
Inactive Publication Date: 2017-01-11
佛山朕华照明材料有限公司
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Problems solved by technology
At present, there are few pure molybdenum wires on the market, and most of them are various molybdenum alloys. The methods of producing molybdenum alloy wires vary from manufacturer to manufacturer. Problems such as shortness, easy loosening, low strength, poor consistency, and low processing pass rate
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Embodiment 1
[0016] Example 1: Add 0.05% Ti, 0.05% Co, 0.22% La2O3,
[0017] ① Doping solid molybdenum dioxide with liquid titanium nitrate, liquid cobalt nitrate, and liquid lanthanum nitrate in a prescribed proportion to obtain a molybdenum dioxide mixture containing titanium nitrate, cobalt nitrate, and lanthanum nitrate.
[0018] ② Reducing the mixture by hydrogen to obtain molybdenum powder containing titanium, cobalt and lanthanum oxide.
[0019] ③Press molybdenum powder→sintering→rolling→rotary hammer→hot drawing→annealing→cold drawing to 0.18mm diameter molybdenum wire, the tensile strength of molybdenum wire is 2215MPa,
Embodiment 2
[0020] Embodiment two, add 0.03% Ti, 0.05% Re, 0.25% Y2O3, 0.1% Ce2O3 in molybdenum
[0021] ①Do solid-liquid doping of solid molybdenum dioxide, liquid titanium nitrate, liquid rhenium nitrate, liquid yttrium nitrate, and liquid cerium nitrate to obtain molybdenum dioxide containing titanium nitrate, rhenium nitrate, yttrium nitrate, and cerium nitrate mixture.
[0022] ②The above mixture is reduced by hydrogen to obtain molybdenum powder containing titanium, rhenium, yttrium oxide and cerium oxide.
[0023] Press the molybdenum powder → sinter → rolling → rotary hammer → hot wire drawing → annealing → cold wire drawing to a diameter of 0.18mm, and the tensile strength of the molybdenum wire is 2108Mpa.
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Abstract
The invention provides a production method of a linearly cut molybdenum wire. Certain solid solution metal elements are added into molybdenum so as to realize a solid solution strengthening effect. The strength of the molybdenum wire can be properly improved, and the machining performance of the molybdenum wire can be improved. Certain rare earth oxides are added into the molybdenum so as to realize refined grain strengthening and dispersion strengthening effects, crystalline grains can be refined, fiber texture can be strengthened, and the strength, high temperature resistance and wear resistance of the molybdenum wire can be improved. By adopting an intermediate annealing technology, the plasticity can be restored, the internal stress is reduced, the machining difficulty is reduced, and the production and expansion of cracks are reduced or eliminated. By adopting a hot wire drawing machining technology, the plasticity of the material can be kept, and the hardening of the material during the machining of a semi-finished product is reduced. By adopting a finished product multi-mode cold wire drawing technology, work-hardening and strength enhancement effects can be realized. The tensile strength of the linearly cut molybdenum wire made by the production method generally can reach 1900-2300mpa and can meet the requirements of linear cutting users.
Description
technical field [0001] The invention relates to the technical field of metal raw materials, relates to a wire-cut molybdenum wire, and in particular to a production method of a wire-cut molybdenum wire. Background technique [0002] Molybdenum wire is widely used in electrode wires for wire-cut electric discharge machine tools, which can cut various metal materials, hard alloys, and magnetic materials. Molybdenum wire is an ideal electrode material for fast and medium wire EDM due to its low cost, good toughness, high strength, good conductivity, and low elongation. At present, there are very few pure molybdenum wires on the market, and most of them are various molybdenum alloys. The methods of producing molybdenum alloy wires vary from manufacturer to manufacturer. Short, loose wire, low strength, poor consistency, low processing pass rate and other problems. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the object of the present invent...
Claims
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Application Information
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