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Method for producing scrape cutter blade

A production method and cutting edge shearing technology, applied in the field of tool manufacturing and processing, can solve the problems of insignificant effect, reduced tool life, poor toughness, etc., so as to improve reliability and service life, reduce impact load, and reduce shearing. force effect

Active Publication Date: 2013-04-10
ANHUI LINGFENG METALLURGICAL MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent solves the clogging phenomenon that is prone to occur during the shearing process to a certain extent, the effect is not obvious
At the same time, the Chinese patent "Curved Blade" with application number 201010196263.6 does not disclose the production process of the blade, especially in the heat treatment and grinding process, which fails to explain the key technical points, and these key processes are to improve the use effect and life of the edge cutter The decisive process; at the same time, in the heat treatment of H13 steel, most of the market adopts tempering and annealing at 550°C, which has poor toughness and reduces the service life of tool workpieces

Method used

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  • Method for producing scrape cutter blade
  • Method for producing scrape cutter blade
  • Method for producing scrape cutter blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] When producing edge scraping scissors, first select H13 (4Cr5MoSiV1) steel as the raw material; then cut the steel material selected above, and cut out a parallelepiped blank from the steel; then forge, the initial forging temperature is 1119 ° C, and the final forging The forging temperature is 850°C; the blank is preheated in the furnace at 500°C, and the temperature is raised after 3 hours, and the temperature is raised to 850°C at a heating rate of 49°C per hour, and the temperature is kept for 10 minutes to ensure uniform burn-through, then heated to 1119°C, and kept for 60 minutes Forged. Then heat-treat the forged material; use quenching temperature of 1000°C, then oil cooling, tempering twice at 260°C, oil cooling again, hardness HRC=53. Finally, use lathes and milling machines to process the top surface, side surface and bottom surface of the workpiece, so that the outer diameter of the workpiece = the outer diameter of the finished product + 25 ± 2mm; use the ...

Embodiment 2

[0038]When producing edge scraping scissors, first select H13 (4Cr5MoSiV1) steel as the raw material; then cut the steel material selected above, and cut out a parallelepiped blank from the steel; then forge, the initial forging temperature is 1119 ° C, and the final forging The forging temperature is 850°C; the blank is preheated in the furnace at 520°C, and the temperature is raised after 3 hours, and the temperature is raised to 850°C at a heating rate of 49°C per hour, and the temperature is kept for 10 minutes to ensure uniform burn-through, then heated to 1119°C, and kept for 60 minutes Forged. Then heat-treat the forged material; use quenching temperature of 980°C, then oil cooling, tempering twice at 255°C, oil cooling again, hardness HRC=54. Finally, use lathes and milling machines to process the top surface, side surface and bottom surface of the workpiece, so that the outer diameter of the workpiece = the outer diameter of the finished product + 25 ± 2mm; use the dr...

Embodiment 3

[0041] When producing edge scraping scissors, first select H13 (4Cr5MoSiV1) steel as the raw material; then cut the steel material selected above, and cut out a parallelepiped blank from the steel; then forge, the initial forging temperature is 1119 ° C, and the final forging The forging temperature is 850°C; the blank is preheated in the furnace at 499°C, the temperature is raised after 3 hours, and the temperature is raised to 850°C at a heating rate of 49°C per hour, and the temperature is kept for 10 minutes to ensure uniform burn-through, then heated to 1119°C, and kept for 60 minutes Forged. Then heat-treat the forged material; use a quenching temperature of 980°C, then oil-cool, temper three times at 265°C, and oil-cool again, with a hardness of HRC=55. Finally, use lathes and milling machines to process the top surface, side surface and bottom surface of the workpiece, so that the outer diameter of the workpiece = the outer diameter of the finished product + 25 ± 2mm; ...

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Abstract

The invention discloses a method for producing a scrape cutter blade and belongs to the field of cutter manufacturing. The method comprises the following steps of: selecting H13 steel, cutting blank which has a shape of a parallel hexahedron, forging and performing heat treatment to ensure that the hardness HRC of a workpiece reaches 52 to 55, processing the top, the sides and the bottom of the workpiece by using a lathe and a milling machine to ensure that the external diameter of the workpiece is equal to the sum of the external diameter of a finished product and 25+ / -2mm, drilling the center of the workpiece, remaining the excess amount and grinding, performing forward and reverse bidirectional accurate grinding on the working edge surface by using an arc grinding wheel, performing accurate grinding on the central hole of the blade to reach the size and the surface roughness which are required by a drawing, and finally inspecting and putting in storage. The produced scrape cutter blade reduces the blade load in the process of cutting, the impact load of the cutter edge, avoids the phenomena of blockage, blade bending, tipping and chipping and the phenomenon that the hardness ofthe blade is reduced so that the blade is worn too quickly, and has a good using effect.

Description

technical field [0001] The invention belongs to the field of cutting tool manufacturing and processing, in particular to a production method of cutting edge scissors blades. Background technique [0002] The scrapping shear is the core equipment of the medium and heavy plate rolling production line, and it can replace the rolling double side shear in the medium and heavy plate production line. For medium and heavy plate production lines of small and medium iron and steel enterprises, the use of scrap shears can bring considerable economic benefits to the enterprise. The chipping shears are located behind the disc shears in the medium and thick plate production line, and are used to cut the waste edges cut by the disc shears, which is beneficial to the collection and recycling of waste edges. [0003] The chipper blade is the core part of the chipper, which can complete the shearing work of the steel plate. The scissor blades are installed on the cutterhead, and the cutterh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/40
Inventor 刘道豹
Owner ANHUI LINGFENG METALLURGICAL MACHINERY
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