CN103952521B - A kind of method making two hardness blade - Google Patents
A kind of method making two hardness blade Download PDFInfo
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- CN103952521B CN103952521B CN201410148338.1A CN201410148338A CN103952521B CN 103952521 B CN103952521 B CN 103952521B CN 201410148338 A CN201410148338 A CN 201410148338A CN 103952521 B CN103952521 B CN 103952521B
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- hardness
- blade
- metal steel
- steel strap
- decarburized layer
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Abstract
The invention discloses a kind of method making two hardness blade, by metal steel strap sectional forming and grinding blade, comprised the following steps before sectional forming and grinding blade: a, metal steel strap to be quenched, promote integral hardness; B, the metal steel strap after quenching is transmitted limit through high-frequency high temperature tempering by transmission band edge, thus make metal steel strap surface oxidation reduce hardness form Decarburized layer, thus make the core of metal steel strap and outside surface form two kinds of different hardness.Not only the blade that the method for the two hardness blade of making of the present invention is made sharp but also wear-resisting, and long service life, and good toughness, allow blade be not easy brittle failure and hurt sb.'s feelings, safer during jack knife.
Description
Technical field
The invention belongs to a kind of cutter accessory field, be specifically related to a kind of method making two hardness blade.
Background technology
Shown in most blades produced in the market be all the blade of single hardness, the shortcoming of single hardness blade, when blade stiffness is too low, blade sharpness and durability just bad, affect normal chip operation; During much higher hard, blade easy chipping during use, easily there is overall brisement in blade, so not only the work-ing life of blade is not long, and may cause personal injury to user.Two hardness blades that our company produces solve the bad phenomenon of this respect thoroughly.Blade is more durable, safer when using.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention proposes a kind of method making two hardness blade, and the single hardness blade solved in conventional art causes blade sharpness and durability difference and causes the easy chipping of blade because hardness is high and cause the problem of personal injury because hardness is low.
(2) technical scheme
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: by metal steel strap sectional forming and grinding blade, comprises the following steps before sectional forming and grinding blade: a, quenched by metal steel strap, promotes integral hardness; B, the metal steel strap after quenching is transmitted limit through high-frequency high temperature tempering by transmission band edge, thus make metal steel strap surface oxidation reduce hardness form Decarburized layer, thus make the core of metal steel strap and outside surface form two kinds of different hardness.
Hardness after wherein said metal steel strap quenching is 64-62HRC.
Wherein when high-frequency high temperature tempering by the transfer rate of controls transfer band, the adjustment degree of depth of Decarburized layer and hardness.
The hardness of wherein said metallic strip surface Decarburized layer is 43-48HRC.
The degree of depth of wherein said metallic strip surface Decarburized layer is 0.08-0.1mm.
(3) beneficial effect
The method of the two hardness blade of making of the present invention, by metal steel strap (raw material) by carrying out tempering after quenching, the core of metal steel strap and outside surface is made to form two kinds of different hardness, further formation makes the structure that the core hardness of blade is high and outside surface hardness is low, solves the bad phenomenon of these several respects; The knife edge is in the core of blade, high sharpness and the durability that ensure that blade of hardness.Surface hardness is low, and blade can wide-angle bending, makes blade be not easy brittle failure and hurts sb.'s feelings, safer during jack knife.
Accompanying drawing explanation
Fig. 1 is the schema that the present invention makes the method for two hardness blade;
Fig. 2 is the structural representation of the blade produced by method of the present invention;
Fig. 3 is the sectional view of A-A in Fig. 2;
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is a kind of method making two hardness blade, by metal steel strap sectional forming and grinding blade, comprised the following steps before sectional forming and grinding blade: a, to be quenched by the steel band of carbon tool steel (SK4) material, promote integral hardness, hardness value is 64-62HRC, b, steel band after quenching is transmitted limit through high-frequency high temperature tempering by transmission band edge, further can carry out high-temperature high-frequency tempering by effects on surface, thus make metal steel strap surface oxidation reduce hardness and form Decarburized layer, make the Hardness Control of Decarburized layer at 43-48HRC by the transfer rate of controls transfer band, severity control is at 0.08-0.1mm, and the hardness of steel band core is not changed, c, pass through steel band sectional forming again, steel band is made to be die-cut into the blade of different size shape, and grinding is carried out on its edge of a knife, the core of steel band is made to become the higher knife edge of hardness, surface be Decarburized layer that hardness is lower (referring to figs. 2 and 3).
And in conventional art, although blade is also through quenching tempering again, but it makes overall for blade tempering, so the blade of single hardness can only be formed, and make the knife edge be the core of high rigidity formed after quenching by making method of the present invention, therefore ensure that sharpness and the fastness to rubbing of blade, relatively extend the work-ing life of blade, be blade face by the Decarburized layer that the hardness after tempering is low, enhance toughness, make blade can wide-angle bending, allow blade be not easy brittle failure and hurt sb.'s feelings, safer during jack knife.
Certainly in disclosed technology, the single hardness blade that also can solve in conventional art causes blade sharpness and durability difference and causes the easy chipping of blade because hardness is high and cause the problem of personal injury because hardness is low, its technical scheme is selecting the higher steel band of hardness as core, the lower steel band of hardness or material is bonded in steel band both sides, also blade is made to form the different structure of two kinds of hardness, but the material of this making blade is many, technique bothers very much, the technique particularly bonded, time-consumingly require great effort again, quality is also bad.And by Quench and temper technique of the present invention, technique is more simple comparatively speaking, material is single, saves time and laborsaving.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. make a method for two hardness blade, by metal steel strap sectional forming and grinding blade, it is characterized in that, comprised the following steps before sectional forming and grinding blade: a, metal steel strap to be quenched, promote integral hardness; B, the metal steel strap after quenching is transmitted limit through high-frequency high temperature tempering by transmission band edge, make metal steel strap surface oxidation reduce hardness and form the Decarburized layer of different hardness;
Hardness after described metal steel strap quenching is 62-64HRC;
When high-frequency high temperature tempering by the transfer rate of controls transfer band, the degree of depth of adjustment Decarburized layer and hardness;
The hardness of described metallic strip surface Decarburized layer is 43-48HRC;
The degree of depth of described metallic strip surface Decarburized layer is 0.08-0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148338.1A CN103952521B (en) | 2014-04-14 | 2014-04-14 | A kind of method making two hardness blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148338.1A CN103952521B (en) | 2014-04-14 | 2014-04-14 | A kind of method making two hardness blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103952521A CN103952521A (en) | 2014-07-30 |
| CN103952521B true CN103952521B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410148338.1A Active CN103952521B (en) | 2014-04-14 | 2014-04-14 | A kind of method making two hardness blade |
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| CN (1) | CN103952521B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3140608A4 (en) | 2014-05-06 | 2017-12-06 | Dane Scarborough | Marking tape measure |
| CN104551041B (en) * | 2014-12-19 | 2017-11-10 | 潘素娇 | A kind of manufacture method of anti-roll blade type cutter |
| CN104475849B (en) * | 2014-12-19 | 2017-04-12 | 苏州路路顺机电设备有限公司 | Manufacturing method for durable milling cutter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6620262B1 (en) * | 1997-12-26 | 2003-09-16 | Nsk Ltd. | Method of manufacturing inner and outer races of deep groove ball bearing in continuous annealing furnace |
| CN1676273A (en) * | 2005-04-29 | 2005-10-05 | 内蒙古第一机械制造(集团)有限公司装具制造公司 | Multi-edge cutter build-up welding method |
| CN101457284A (en) * | 2008-12-30 | 2009-06-17 | 重庆飞达电炉有限公司 | Decarburization heat processing furnace for reducing carbon content on work piece surface |
| CN103131838A (en) * | 2013-03-20 | 2013-06-05 | 沈阳飞机工业（集团）有限公司 | Welding thermal treatment process for welding hard alloy blade tool |
-
2014
- 2014-04-14 CN CN201410148338.1A patent/CN103952521B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6620262B1 (en) * | 1997-12-26 | 2003-09-16 | Nsk Ltd. | Method of manufacturing inner and outer races of deep groove ball bearing in continuous annealing furnace |
| CN1676273A (en) * | 2005-04-29 | 2005-10-05 | 内蒙古第一机械制造(集团)有限公司装具制造公司 | Multi-edge cutter build-up welding method |
| CN101457284A (en) * | 2008-12-30 | 2009-06-17 | 重庆飞达电炉有限公司 | Decarburization heat processing furnace for reducing carbon content on work piece surface |
| CN103131838A (en) * | 2013-03-20 | 2013-06-05 | 沈阳飞机工业（集团）有限公司 | Welding thermal treatment process for welding hard alloy blade tool |
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| CN103952521A (en) | 2014-07-30 |
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