CN1013886B - Ion implantation technique for cutting tools - Google Patents
Ion implantation technique for cutting toolsInfo
- Publication number
- CN1013886B CN1013886B CN 87104358 CN87104358A CN1013886B CN 1013886 B CN1013886 B CN 1013886B CN 87104358 CN87104358 CN 87104358 CN 87104358 A CN87104358 A CN 87104358A CN 1013886 B CN1013886 B CN 1013886B
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- cutting tools
- ion implantation
- desire
- alloy
- source electrode
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Abstract
The present invention relates to a technique for impregnating metals into sawing tools by means of ions, which belongs to the field of surface metallurgy. The present invention has the main purpose and the technical characteristic that a treated plain carbon steel sawing tool is heated to the high temperature by means of the hollow cathode effect with unequal potential under the existence of low-temperature plasma generated by low-vacuum gas discharge, tungsten, molybdenum and other alloy elements for impregnating are sputtered on the surface of the saw tooth of the sawing tool, an alloy layer containing tungsten, chromium, molybdenum, vanadium, titanium and other alloy elements, which are similar to the ingredients of high-speed steel, is formed by a diffusion process, and then carburizing treatment, quenching treatment and tempering treatment are carried out, and the impregnating process is completed.
Description
The invention belongs to field of surface metallurgy.
For many years, cutting tools such as hand are used and machine hacksaw blade, and band saw and circular saw blade etc. all adopts carbon steel or low alloy steel to make.Afterwards, the cutting tools that rapid steel is made had appearred.Nineteen sixty-five, the U.S. (Doall) company of reining in the road has invented bimetal saw blade again and has obtained patent.So-called bimetal saw blade is meant that its serrated portion made by rapid steel, but not serrated portion also promptly saws the body part and still made by carbon steel or low alloy steel, adopts the vacuum electron beam welding technique this two a kind of novel saw blade of getting up of butt welding partly again.This saw blade is widely used in the world.With the hand bimetal saw blade is example, for rolling section is 1.4 * 0.63 millimeters a high speed steel band, must adopt special rapid steel flat filament milling train.The vacuum electron beam welding technique is very complicated again and cost of equipment is expensive, thus make the manufacture craft process of bimetal saw blade very complicated, and cost height, price are expensive.
On May 28th, 1985, obtained United States Patent (USP) power by the double-deck glow discharge ion implantation technique of Chinese scholar invention.This patented technology is glow discharge and the sputtering phenomenon that utilizes in the rarefied gas, and the source electrode be made up of desire co-diffusioning alloy element and the negative electrode of place work piece are set in vacuum vessel.Glow discharge between source electrode and the anode sputters out alloying element and marches on towards by ion bombardment and is heated to the pyritous workpiece surface, and then makes workpiece surface form the alloy layer that contains desire co-diffusioning alloy element by means of the deposition diffusion process.
The objective of the invention is double-deck glow discharge ion implantation technique and hollow cathode effect are used for cutting tools, make the sawtooth of the cutting tools of making by plain carbon stool or low alloy steel partly after ion implantation is handled, form the high-speed steel alloy layer, and make it have the cutting ability that rapid steel or rapid steel double metal saw cutting tool are had.But the present invention have again himself exclusive characteristics.It itself also is unprecedented that cutting tools adopts the method for surface alloying to make its this imagination with similar rapid steel cutting ability.
The present invention adopts one can vacuumize and can charge into rare gas element to form the sealed vessel of certain gaseous tension.Its final vacuum is not less than 133.32 * 10
-2Pa, behind the feeding rare gas element (as argon gas), its atmospheric pressure changes in the scope of 1.3332-1333.2Pa.In this container, establish anode, negative electrode and at least one source electrode.Processed cutting tools is placed on the negative electrode, and source electrode mainly is made up of elements such as desire co-diffusioning alloy element such as tungsten chrome alums.As anodic body of heater and negative electrode and and source electrode between respectively be provided with 0～1500 volt tunable voltage dc power supply.
In order further to illustrate characteristics of the present invention, we are example with the hand saw blade in the cutting tools, and the length and width height of this saw blade is of a size of 300 * 12 * 0.63 millimeter.We form the flat board that is similar to washboard that a sawtooth makes progress with this kind saw blade and together, and this sawtooth plane should be facing to by source electrodes that alloying element constituted such as tungsten, molybdenums.(as shown in Figure 1,1-vacuum workshop, anode among the figure, the 2-source electrode, 3-negative electrode (workpiece), 4-connects pumped vacuum systems, 5-inert gas import, 6-source electrode gabarit forward position).
According to the research of gas glow discharge theory and phenomenon, there is a space potential to fall the district suddenly around the aura that is produced around the negative electrode, people are referred to as the cathode fall district.The width D in this cathode fall district
KBe the function of gaseous tension under this geseous discharge condition, change with variation of gas pressure.
In the ordinary course of things, above-mentioned sawtooth planar source electrode gabarit should be greater than a D with respect to the forward position planar spacing of this serrated face
KThe value but should be less than two D
KValue.Like this, when connecting direct supply, the overlapping intensity that will aggravate glow discharge of the glow discharge layer that negative electrode and source electrode produced, thus help strengthening the sputter of source electrode.When negative electrode and source electrode are in same negative potential, this aura mutual superposition and phenomenon that aura is strengthened is referred to as hollow cathode effect by people.But under the ion implantation treatment condition of cutting tools, source electrode has different negative potentials with negative electrode, the overlapping strengthening effect that also can be similar to hollow cathode effect of the aura that is produced between them, we are referred to as not equipotential hollow cathode effect with this phenomenon.The application of equi-potential hollow cathode effect in cutting tools ion implantation technology is not a principal character of the present invention.
Under different air pressure, the width D in the cathode fall district of glow discharge
KValue is different, and air pressure is low more, then D
KBe worth big more.Vice versa.For producing not equipotential hollow cathode effect, the interplanar distance range of serrated face and source electrode gabarit forward position is 2～80 millimeters, adopts 10～40 millimeters usually.Source electrode form of the present invention and structure can be brush shapes (Fig. 2-a), volution (Fig. 2-b), grid shape (Fig. 2-c), or plate shaped (Fig. 2-d) etc.With the brush shapes is example, and brush is to be made of steel plate and the nail that is set on the steel plate.Each nail can be a certain single-element of desire co-diffusioning alloy element, also can be the alloy that all desire co-diffusioning alloy elements are formed.When nail is made and requires to infiltrate two or more alloying element simultaneously by single-element, should be according to the requirement of sawtooth to each constituent content, the nail that different elements are made constitutes the brush shapes source electrode with certain quantity ratio and certain arrangement and distribution mode.
Desire co-diffusioning alloy element of the present invention mainly is tungsten, molybdenum, chromium, vanadium, also can infiltrate alloying elements such as cobalt, titanium, aluminium, niobium.The potential range that the source electrode that they constituted is adopted in glow discharge is-400～-1000 volts, and the potential range that negative electrode (being workpiece) is adopted is-100～-600 volts.
For the cutting tools that plain carbon stool is made has the rapid steel cutting ability, it is not enough only adopting ion implantation technology to make its serrated portion form the high-speed steel alloy layer, also must carry out subsequent heat treatment, as carburizing, quenching and tempering etc.The temperature ranges that ion implantation technology is adopted is 900～1100 ℃, and the time of processing is depended on desired thickness of sawtooth alloying and treatment temp, generally takes 3～5 hours.To depend primarily on the composition of serrated portion high-speed steel alloy layer as for technologies such as carburizing and quenching and tempering.
The main technique flow process of the ion implantation cutting tools of being made by the present invention is as follows: the cold-strip blanking that carbon steel or low alloy steel is made or punching → gear-shaping → minute tooth → ion implantation → carburizing → quenching → tempering → and clear up, spray paint, pack.
Claims (8)
1, cutting tools ion implantation method is can be evacuated and can charge in the encloses container of inert gas medium, utilize the glow discharge phenomenon to make desire co-diffusioning alloy element infiltrate the serrated surface of cutting tools and make its formation be similar to the alloy layer of rapid steel composition, the source electrode that it is characterized in that in this encloses container, being provided with anode, negative electrode and make by desire co-diffusioning alloy element, one cover tunable voltage dc power supply respectively is set between anode and negative electrode and source electrode, is controlled at cathode fall sector width D as the serrated portion of the cutting tools of negative electrode and the distance between the source electrode gabarit leading surface
KAnd 20
KBetween form not equi-potential hollow cathode effect between them so that make, the desire co-diffusioning alloy element that is sputtered out from source electrode is to the cutting tools apparent motion and be adsorbed in its surface, glow discharge between anode and the negative electrode simultaneously makes negative electrode be heated to 900-1100 ℃, and desire co-diffusioning alloy element just infiltrates and be similar to along the flank profil formation one of sawtooth the alloy diffusion layer of rapid steel composition to sawtooth inside by means of diffusion process.
2, cutting tools ion implantation method according to claim 1, cutting tools wherein is meant various hand saw blades, machine hacksaw blade, bands for band and circular saw blade etc., this cutting tools system is made by plain carbon stool or low alloy steel.
3, cutting tools ion implantation method according to claim 1, wherein the vacuum vessel vacuum tightness that can reach should be higher than 133.32 * 10
-2Pa.
4, cutting tools ion implantation method according to claim 1, wherein said glow discharge is carried out in gaseous tension is the 1.3332-1333.2Pa scope.
5, cutting tools ion implantation method according to claim 1, desire co-diffusioning alloy element wherein mainly is meant tungsten, molybdenum, chromium, vanadium, cobalt, aluminium, titanium, niobium.
6, cutting tools ion implantation method according to claim 1, wherein said by the made source electrode of desire co-diffusioning alloy element, its structure formation can be brush shapes, volution, grid shape and plate shaped etc., the element of forming source electrode can be silk, bar, rod, plate etc., this element can be the single-element of desire co-diffusioning alloy element, also can be that the alloy that all desire co-diffusioning alloy elements are formed is made.
7, cutting tools ion implantation method according to claim 1, wherein said tunable voltage dc power supply, its voltage-regulation scope is 0-1500V.
8, cutting tools ion implantation method according to claim 1, cutting tools is carrying out carrying out processing such as carburizing, quenching and tempering so that it reaches the cutting ability of rapid steel after ion implantation is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104358 CN1013886B (en) | 1987-06-20 | 1987-06-20 | Ion implantation technique for cutting tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104358 CN1013886B (en) | 1987-06-20 | 1987-06-20 | Ion implantation technique for cutting tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1034229A CN1034229A (en) | 1989-07-26 |
| CN1013886B true CN1013886B (en) | 1991-09-11 |
Family
ID=4814839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87104358 Expired CN1013886B (en) | 1987-06-20 | 1987-06-20 | Ion implantation technique for cutting tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013886B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109125C (en) * | 1998-10-14 | 2003-05-21 | 太原理工大学 | Fe-W-Mo-Co type surface aged hardened alloy |
| CN1318639C (en) * | 2005-01-07 | 2007-05-30 | 太原理工大学 | Thermal electron reinforced ionic boronizing device and process |
| CN100376356C (en) * | 2005-04-06 | 2008-03-26 | 三一重工股份有限公司 | Method for manufacturing high strength and highly wear-resisting flashboard |
| CN100384585C (en) * | 2005-04-06 | 2008-04-30 | 三一重工股份有限公司 | Method for manufacturing highly wear-resisting grader blade |
| CN101323944B (en) * | 2008-06-16 | 2010-06-16 | 江阴市鑫宏科技有限公司 | Boro-carburizing microalloying method of shearer cutter |
| CN103014724A (en) * | 2011-09-23 | 2013-04-03 | 杨洁 | Reinforcement and wear resistance-improvement preparation method of threaded mold |
| CN102312187B (en) * | 2011-09-28 | 2012-11-07 | 黄山学院 | Complete equipment for strengthening treatment of cutter surface |
| CN103194719B (en) * | 2012-01-05 | 2016-03-02 | 曾云发 | High-performance ceramic piston ring manufacturing technology |
| CN103882369B (en) * | 2014-04-11 | 2016-05-18 | 北京石油化工学院 | A kind of graphite source electrode for aura non-hydrogen carbonizing |
| CN104109830B (en) * | 2014-07-22 | 2017-01-18 | 桂林电子科技大学 | Surface hafnium-infiltrated austenitic stainless steel resistant to high temperature and preparation method thereof |
-
1987
- 1987-06-20 CN CN 87104358 patent/CN1013886B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034229A (en) | 1989-07-26 |
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