Central composite stainless cutter strip steel and preparation method thereof
A technology of stainless steel and knives, applied in the field of tool material manufacturing, can solve problems such as high labor costs, high prices, and low production efficiency
Inactive Publication Date: 2015-02-11
上海泛屹复合钢有限公司
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Problems solved by technology
However, explosion (three layers) and hot-rolled composite (three layers) are expensive (30,000 to 50,000 per ton), and civilian knives cannot afford it. ) uses three-layer composite steel, and the rest generally use pure 1Cr13, and the two materials are welded into one knife blank by argon arc welding
Although the cost of this manufacturing process has been reduced, the production efficiency is low and the labor cost is high.
The existing explosive composite and hot rolling composite stainless steel tool composite steel production process is mainly to do three layers (the upper and lower two layers of body steel are low-carbon martensitic and ferritic stainless steel, and the middle layer of cutting edge steel is high-carbon martensitic stainless steel. Body stainless steel), but it is impossible to make the cutting edge steel in the middle layer of the three-layer steel
Method used
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Embodiment 1
[0011] Embodiment 1: refer to figure 1 , figure 2 , the core material of the present invention is covered with pipe material, and the two ends of the pipe material are welded with sealing plates.
Embodiment 2
[0012] Embodiment 2: refer to figure 1 , figure 2 , image 3 , Figure 4 , to prepare pipes, mechanically cut two pieces of 1Cr17 stainless steel with equal length, width and height to remove the oxide layer and expose the true color of the metal, respectively slot in the middle of the length surface of the two pieces of 1Cr17 stainless steel, the pipe is made of the grooved upper groove plate and The lower groove plate is composed of the core material, and the 9Cr18MoV stainless steel is mechanically cut to remove the oxide layer to expose the true color of the metal. The cross section of the core material is rectangular or square, and the composite pipe and core material are cleaned. The core material is put into the cavity synthesized by the symmetrical upper groove plate and the lower groove plate in the way of transition fit, and the CO 2 For the contact gap between the stainless steel welding wire shielded welding pipe and the core material, use two sealing plates w...
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The invention relates to the technical field of cutter material manufacture, in particular to central composite stainless cutter strip steel and a preparation method thereof. The central composite stainless cutter strip steel comprises a core material, wherein the periphery of the core material in the length direction is wrapped with a pipe material, and two ends of the pipe material are firmly connected with seal plates. The preparation method of the central composite stainless cutter strip steel comprises steps as follows: a, pipe material preparation; b, core material preparation; c, compositing of the pipe material and the core material; d, hot rolling; e, annealing; and f, acid pickling and cold rolling. According to the central composite stainless cutter strip steel and the preparation method, a cutter blank can be directly punched, the labor productivity is improved, the manufacturing cost is reduced, impurities can be substantially reduced after electroslag remelting and external refining, the cleanness of molten steel is improved, grain refinement is uniform, segregation is prevented, and the comprehensive mechanical properties of the material are improved. According to detection of Shanghai Institute of Machinery Building Technology Co. Ltd., the Vickers hardness of the core material is equivalent to HRC 59-60.
Description
technical field [0001] The invention relates to the technical field of tool material manufacturing, in particular to a central composite stainless steel tool strip and a preparation method thereof. Background technique [0002] The cutting tool of the martensitic stainless steel (3Cr13, 4Cr13) of the prior art is very hard and sharp after quenching, but the cutting edge is pure after a period of use, not sharp, and difficult to sharpen. The characteristic of stainless composite steel is that the cutting edge steel used as the core material in the middle layer is high carbon martensitic stainless steel (6Cr13, 7Cr15, 8Cr13) and the outer two layers are ferrite (0-1 Cr13) as the body steel, which is easy to grind. Sharpen, the cutting edge remains sharp all the time. This is the best material of choice for making high-end civilian and chef's knives with existing technology, and it has also been accepted and recognized by the market. There are three main processes for produc...
Claims
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Login to View More IPC IPC(8): B23P15/00
CPCB23P15/28
Inventor 范广益范晔
Owner 上海泛屹复合钢有限公司