Bar hot shear blade laser-quenching manufacturing process

A laser quenching and manufacturing process technology, applied in manufacturing tools, heat treatment furnaces, heat treatment equipment, etc., can solve the problems of easy melting of sharp corners of cutting edges, unusable and invisible tools and molds, etc., so as to reduce production costs and improve The effect of life and productivity improvement

Inactive Publication Date: 2011-06-15
BEIJING DALU TIANRUI LASER ENG TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technical solution also pointed out that if the focused laser spot is directly irradiated on the cutting edge of the tool and the mold, the sharp corner of the cutting edge will be easily melted, which will cause the tool and the mold to be unusable
[0012]

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Use gasoline to remove oil and decontamination solvent to remove oil and rust on the surface of the cutting edge, and then use sandpaper to polish the surface of the cutting edge to further remove dirt, so as to spray the light-absorbing coating evenly; then use a spray gun or brush to mix the SiO evenly with the adhesive 2 Light-absorbing paint is evenly applied to the surface of the cutting edge to improve the resistance of the metal surface to CO 2 Absorptivity of laser, in which the ratio of paint and adhesive is: 85g SiO 2 +520ml alcohol + 12ml varnish, the pre-coating thickness is 0.03mm; open the DL-HL-5000 CO after the coating is air-dried 2 The laser scans the surface of the cutting edge quickly, so that the surface of the cutting edge can be heated and cooled rapidly. The specific process parameters are as follows: laser power P=2.7kW, bandwidth size is length×width=10mm×1mm, lap width is 0.5mm, and scanning speed V=300mm / min.

Embodiment 2

[0028] Use alcohol degreasing and decontamination solvent to remove oil and rust on the surface of the cutting edge, and then use sandpaper to polish the surface of the cutting edge to further remove dirt, so as to spray the light-absorbing coating evenly; then use a spray gun or brush to mix the SiO evenly with the adhesive 2 Light-absorbing paint is evenly applied to the surface of the cutting edge to improve the resistance of the metal surface to CO 2 Absorptivity of laser, in which the ratio of paint and adhesive is: 90g SiO 2 +580ml alcohol + 12ml varnish, the pre-coating thickness is 0.04mm; open the DL-HL-5000 CO after the coating is air-dried 2 The laser scans the surface of the cutting edge quickly, so that the surface of the cutting edge can be heated and cooled rapidly. The specific process parameters are as follows:

[0029] The laser power is P=4.5kW, the width of the bandwidth is length×width=10mm×1mm, the lap width is 0.7mm, and the scanning speed V=500mm / min....

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PUM

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Abstract

The invention discloses a bar hot shear blade laser-quenching manufacturing process. The process is characterized by comprising the following steps of: (1) removing greasy dirt and rust from the surface of the shear blade, and polishing the surface of the shear blade to ensure that a light absorption coating can be sprayed conveniently and uniformly; (2) uniformly coating a SiO2 light absorption coating on the surface of the shear blade to improve the CO2 laser absorption rate of the metal surface; (3) air-drying the coating; and (4) quickly scanning the surface of the shear blade on which the light absorption coating is coated by using a DL-HL-5000 type CO2 laser to quickly heat and cool the surface of the shear blade, wherein the process parameters are that: laser power is 2.5 to 4.5kW, round light spots are changed into rectangular light spots by a broadband integral mirror technology, the bandwidth size is that length*width is equal to 10mm*1mm, lap width is 0.5 to 1mm, and scanning speed V is equal to 200 to 1,000mm/min. An appropriate laser-quenching process is selected, good metallurgical bonding of a hard gold layer and a shear blade matrix is realized.

Description

technical field [0001] The invention relates to a manufacturing method for metallurgical equipment parts, in particular to a laser quenching manufacturing process for hot shearing and shearing edges of bars, belonging to the technical field of C21D1 / 06 (2006.01)I in the IPC International Patent Classification. Background technique [0002] Bar double-foot flying shear is one of the key equipments in small and medium-sized wire and bar rolling workshops. With the diversification of rolling products, from low-speed large-section rolling to high-speed small-section slitting rolling, the requirements for flying shears are getting higher and higher, especially the cutting edges of flying shears, the performance of which directly affects the rolling workshop. The productivity, success rate and fixed-length pass rate. At present, domestic hot shearing blades are mainly made of integral high-alloy steel. In order to pursue impact resistance, the hardness is reduced, resulting in in...

Claims

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Application Information

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IPC IPC(8): C21D1/09C21D1/68C21D9/00
Inventor 杨佳才王文清陈海涛姚志雄唐金龙陶顺利闫玉杰
Owner BEIJING DALU TIANRUI LASER ENG TECHCO
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