A production process of jet forming composite material tbm cutter ring
A technology of composite materials and spray forming, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of high waste, high cost, high energy consumption, etc., and achieve the effects of sufficient diffusion, high strength, and high degree of grain refinement
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Embodiment 1
[0028] A kind of production technology of jet forming composite material TBM cutter ring, the steps are as follows:
[0029] (1) if figure 1 and 2 As shown, low alloy steel and high wear-resistant alloy steel are liquefied by smelting equipment Ⅰ1 and Ⅱ4 respectively. After liquefaction, they pass through two atomizers Ⅰ2 and Ⅱ5 respectively. The state is sprayed separately from the atomizing cone I3 onto the rotating thin steel pipe 7 to obtain a double-layer composite material; when the low-alloy spraying is about to end, the liquefied high-wear-resistant alloy steel passes through the second atomizer II5, from the atomization Cone II 6 is sprayed onto the rotating double-layer composite material, and the thin steel pipe 7 is used as the base layer, the middle is low-alloy steel material, that is, the first sprayed matrix layer 8, and the outer layer is made of high wear-resistant alloy steel material, that is, the sprayed wear-resistant layer 9 The composite tube blank 10...
Embodiment 2
[0035] A kind of production technology of jet forming composite material TBM cutter ring, the steps are as follows:
[0036] (1) Injection: Through the method of "relay" injection forming, the two liquid metals smelted, one is low-alloy steel material 30Cr with excellent material toughness and low cost 2 Ni 2 Mo material, another kind of high wear-resistant alloy steel material with good wear resistance (made of the following raw materials in parts by weight: C: 0.56, Si: 0.15, Mn: 0.30, S: ≤0.010, P: ≤0.015, Cr: 5.8, Mo: 2.0, V: 0.4, Ni ≤ 0.02), according to the sequence, through two atomizers, under the protection of inert gas, the liquefied low-alloy steel is first liquefied in a solid-liquid two-phase state (30 % of the liquid phase ratio) is sprayed onto a thin steel pipe with an outer diameter of 160mm and a wall thickness of 1-2mm rotating at a certain angular velocity. The superheat of the molten steel before entering the atomizer is guaranteed to be between 40°C and ...
Embodiment 3
[0042] A kind of production technology of jet forming composite material TBM cutter ring, the steps are as follows:
[0043] (1) Injection: Through the method of "relay" injection forming, the two liquid metals smelted, one is low-alloy steel material 30Cr with excellent material toughness and low cost 2 Ni 2 Mo material, another kind of high wear-resistant alloy steel material with good wear resistance (made of the following raw materials in parts by weight: C: 0.62, Si: 0.32, Mn: 0.45, S: ≤0.010, P: ≤0.015, Cr: 6.2, Mo: 2.2, V: 0.4-0.8, Ni ≤ 0.02), according to the sequence, through two atomizers, under the protection of inert gas, first liquefied low alloy steel in a solid-liquid two-phase state (40% liquid phase ratio) is sprayed onto a thin steel pipe with an outer diameter of 170mm and a wall thickness of 1-2mm rotating at a certain angular speed. The superheat of the molten steel before entering the atomizer is guaranteed to be between 45°C and the droplet is controlla...
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