CN110039167A - Wolfram steel bar welding method - Google Patents
Wolfram steel bar welding method Download PDFInfo
- Publication number
- CN110039167A CN110039167A CN201910445646.3A CN201910445646A CN110039167A CN 110039167 A CN110039167 A CN 110039167A CN 201910445646 A CN201910445646 A CN 201910445646A CN 110039167 A CN110039167 A CN 110039167A
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- CN
- China
- Prior art keywords
- wolfram steel
- steel bar
- bars
- bar
- welding method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K13/00—Welding by high-frequency current heating
- B23K13/01—Welding by high-frequency current heating by induction heating
- B23K13/015—Butt welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of wolfram steel bar welding method mainly includes the following steps: S110: pretreatment provides at least two wolfram steel bars, is handled respectively by centreless grinding, and the connecting end surface for keeping two wolfram steel bars to be connected keeps plane, and two connecting end surfaces can abut when guaranteeing welding；S120: positioning welding, two bars abutting is placed in the jig concentric with two bars, one brazing piece is placed between two bars, heat two bar connecting end surfaces and the brazing piece between two connecting end surfaces, scaling powder is added, and scaling powder is coated uniformly on to the interface position of two bar connecting end surfaces, so that spelter solder can uniformly bond two bars；S130: post-processing, the bar to be welded in step S120, which is put into pulverized limestone, to be cooled to room temperature.By the way that used bar is welded recycling, production cost can be substantially reduced, improves utilization rate of raw materials, and easy to operate, it is low in cost.
Description
Technical field
The present invention relates to a kind of welding method more particularly to a kind of welding methods of wolfram steel bar.
Background technique
Wolfram steel plug is generally monoblock type at present, i.e. all wolfram steel materials of whole plug are made with obtaining plug in molding
With middle embodiment wolfram steel hardness height, anti abrasive characteristic.But due to monoblock type plug because of the characteristic with high hardness of wolfram steel, in reality
Without certain elastic in the use of border, and easy fracture, easily explosion.In addition, the tungsten carbide tipped tool after use is because for it in processing
Before the blade opened have worn out, generally require the part for cutting away nose wear and reuse wolfram steel bar, but because
The length of wolfram steel bar is reduced after cutting, does not meet the processing request of new product generally, but wolfram steel cost is again high, if
Directly these bars are scrapped, production cost can be greatly improved.
Summary of the invention
In view of this, it is necessary to provide one kind, and wolfram steel bar recycling rate of waterused can be improved, reduction is scrapped, and saves cost, will
Used bar welds the welding method of recycling.
A kind of wolfram steel bar welding method, mainly includes the following steps:
S110: pretreatment provides at least two wolfram steel bars, is handled respectively by centreless grinding, the company for keeping two wolfram steel bars to be connected
Contact surface keeps plane, and two connecting end surfaces can abut when guaranteeing welding；
S120: two bars abutting is placed in the jig concentric with two bars, a brazing piece is placed on two bars by positioning welding
Between, two bar connecting end surfaces and the brazing piece between two connecting end surfaces are heated, scaling powder is added, and scaling powder is uniform
Interface position coated in two bar connecting end surfaces, so that spelter solder can uniformly bond two bars；
S130: post-processing, the bar to be welded in step S120, which is put into pulverized limestone, to be cooled to room temperature.
Wherein, the flatness of the two wolfram steel bar connecting end surface is between 0 ~ 0.002 degree.
Wherein, the scaling powder is brazing powder.
Wherein, the scaling powder is silver soldering powder.
Wherein, it is high-frequency induction welder that the heating installing is standby comprising an induction coil, two bar are placed on the induction coil
In.
Wherein, the high-frequency induction welder is heated to 500HZ hertz degree.
Wherein, it states in step S130, the temperature fall time is 2-6 hours.
Wherein, further include step S140: warping resistance power being carried out to the wolfram steel bar being welded and rigidity is tested, to determine to weld
Whether the performance for connecing the new wolfram steel bar to be formed meets the requirements.
Wherein, further include following steps in the S110 step: being maintained at the cylindricity of wolfram steel bar by centreless grinding
Between 0 ~ 0.003mm.
Wolfram steel bar welding method of the invention can be dropped significantly by the way that used bar is welded recycling
Low production cost improves utilization rate of raw materials, and easy to operate, low in cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of specific embodiment of the invention mold wolfram steel plug.
Fig. 2 is specific embodiment of the invention welding method schematic diagram
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is the structure chart and welding process figure of the wolfram steel bar of the present embodiment, the welding side please refer to Fig. 1 and Fig. 2
Method includes the following steps:
S110: the wolfram steel bar 10,20 after at least two cuttings is handled by centreless grinding respectively, guarantees wolfram steel stick by pretreatment
The cylindricity and finish of material 10,20, and the contact surface to be welded 12,22 of two wolfram steel bars 10,20 is made to keep plane, it should generally protect
Its flatness is demonstrate,proved between 0 ~ 0.002 degree, both ends of the surface 12,22 can abut when guaranteeing welding, the cylindricity generally 0 ~
Between 0.003mm.Wolfram steel bar length after use common at present is all in 45mm hereinafter, and the bar length of market demand
Generally in 50mm or more.This welding method is exactly the bar for the bar that length is lower than 45mm being welded into 50mm or more, provides tungsten
The reuse of rod iron material.
S120: the abutting of bar 10,20 is placed on the concentric jig of bar 10,20 by positioning welding, and it is high to be put into one
In the induction coil of frequency welding machine, while a brazing piece 30 being placed between both ends of the surface 12,22 again, bar is heated by high-frequency induction welder
10,20 end face 12,22 and brazing piece 30, while scaling powder is added, scaling powder melts in heated situation, then will melt rapidly
The scaling powder of change is coated uniformly on both ends of the surface 12,22 interface positions, so that spelter solder can uniformly bond the weldering of bar 10,20
Position is connect, the scaling powder is generally brazing powder or silver soldering powder, can select according to specific welding material, specific embodiment party of the present invention
Brazing powder is used in formula, is heated to general 800 ° -900 ° or so to high-frequency induction welder, and soldered bar 10,20 is rubescent, brazing piece 30
Melt, the solder after control is melted at the uniform velocity moves and cover bar 10,20 both ends of the surface 12,22 peripheries, after 1 ~ 2 second, stops heating.
Wherein, the principle of heating of the high-frequency induction welder is the magnetic field formation basic theory according to straight line current, has been concentrated most in straight line narrow slit area
The intensive magnetic line of force, the magnetic line of force pass through conductor, should generate electric current, conductor itself makes electricity be converted into heat with the presence of resistance
Can, heat conductor.Induction coil connects on high frequency electric source, and what is induced is also high-frequency alternating magnetic field.HF current frequency is higher,
Electric current is more intensively in conductive surface, therefore surface temperature rises quickly when high-frequency heating, can often make within several seconds to tens seconds
Welded article temperature reaches welding required temperature.The gap of high-frequency induction welder induction coil produces the most intensive magnetic line of force, and gap is narrower,
Energy is just more concentrated, and device efficiency is higher, and heating is also faster.By way of this fast heating, it is possible to reduce wolfram steel surface
By the chance of thermal oxide, and then avoid causing the situation of reduced performance to occur because wolfram steel welds.Brazing piece fusing point is low, general molten
Changing temperature is 800 degree ~ 900 degree, and the specific embodiment of the invention uses brazing piece, can be to avoid the feelings that wolfram steel aoxidizes at high temperature
Shape occurs, and low in cost, and welding performance is strong.
S130: post-processing, the bar to be welded in step (2), which is put into pulverized limestone, first to be kept the temperature, then is slowly cooled to room temperature, and one
As place 2 ~ 6 hours, since pulverized limestone has thermal insulation property, wolfram steel bar after being heated at high temperature first keeps temperature in pulverized limestone
Degree, then gradually cools down again, can occur in this way to avoid the situation that wolfram steel bar cracks because reducing temperature suddenly.To bar temperature
After degree is down to room temperature, then bar is subjected to grinding and buffing and is handled to remove the welding clout of billet surface.Pass through centreless grinding again
Bar bounce after guaranteeing welding controls within 0.003mm and finish.
S140: the wolfram steel bar being welded is carried out warping resistance power and rigidity is tested by warping resistance power and rigidity test, it may be assumed that
Wolfram steel bar is placed on a bending apparatus, wolfram steel bar is surrounded into the bending apparatus with certain diameter to defined angle
Or being bent to two face contacts without flexual center, i.e., bending 180 degree, inspection sample bear the ability of deformation.In addition, sample is lain in again
On two fulcrums, in the case where span terminal applies static force in short-term, determination makes whether sample is broken, and then tests its rigidity.It is logical
Warping resistance power and rigidity test are crossed, to determine whether soldered new wolfram steel bar performance meets the requirements.If conditions are not met, needing
It re-starts processing or scraps.
Above-mentioned welding method is not limited to only weld two sections of bars, can be according to the length and needed length of practical bar, will
Three sections or three sections or more of bar is welded together with identical method.In addition, at least two sections of bars are not necessarily complete in the present invention
Portion is wolfram steel material, wherein will can also change other materials bar by one or more snippets bar according to actual needs.
In addition, for those of ordinary skill in the art, can make in accordance with the technical idea of the present invention other each
Kind changes and modifications, and all these changes and deformation all should belong to the protection scope of the claims in the present invention.
Claims (9)
1. a kind of wolfram steel bar welding method, which comprises the steps of:
S110: pretreatment provides at least two wolfram steel bars, is handled respectively by centreless grinding, the company for keeping two wolfram steel bars to be connected
Contact surface keeps plane, and two connecting end surfaces can abut when guaranteeing welding；
S120: two bars abutting is placed in the jig concentric with two bars, a brazing piece is placed on two bars by positioning welding
Between, two bar connecting end surfaces and the brazing piece between two connecting end surfaces are heated, scaling powder is added, and scaling powder is uniform
Interface position coated in two bar connecting end surfaces, so that spelter solder can uniformly bond two bars；
S130: post-processing, the bar to be welded in step S120, which is put into pulverized limestone, to be cooled to room temperature.
2. wolfram steel bar welding method according to claim 1, it is characterised in that: the two wolfram steel bar connecting end surface
Flatness is between 0 ~ 0.002 degree.
3. wolfram steel bar welding method according to claim 1, it is characterised in that: the scaling powder is brazing powder.
4. wolfram steel bar welding method according to claim 1, it is characterised in that: the scaling powder is silver soldering powder.
5. wolfram steel bar welding method according to claim 1, it is characterised in that: the standby heating installing is ratio-frequency welding
Machine a comprising induction coil, two bar are placed in the induction coil.
6. wolfram steel bar welding method according to claim 5, it is characterised in that: the high-frequency induction welder is heated to 500HZ
Hertz degree.
7. wolfram steel bar welding method according to claim 1, it is characterised in that: in the step S130, the cooling
Time is 2-6 hours.
8. wolfram steel bar welding method according to claim 1, it is characterised in that: further include step S140: to being welded
Wolfram steel bar carry out warping resistance power and rigidity is tested, to determine whether the performance of new wolfram steel bar that welding is formed meets and wants
It asks.
9. wolfram steel bar welding method according to claim 1, it is characterised in that: in the S110 step, further include as
Lower step: it is maintained at the cylindricity of wolfram steel bar between 0 ~ 0.003mm by centreless grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445646.3A CN110039167A (en) | 2019-05-27 | 2019-05-27 | Wolfram steel bar welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445646.3A CN110039167A (en) | 2019-05-27 | 2019-05-27 | Wolfram steel bar welding method |
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| Publication Number | Publication Date |
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| CN110039167A true CN110039167A (en) | 2019-07-23 |
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ID=67283735
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910445646.3A Pending CN110039167A (en) | 2019-05-27 | 2019-05-27 | Wolfram steel bar welding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788504A (en) * | 2019-11-11 | 2020-02-14 | 张家港市锐正精密工具有限公司 | Improved machining process of key end mill |
Citations (8)
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|---|---|---|---|---|
| DE69600474D1 (en) * | 1995-09-06 | 1998-09-03 | Daido Steel Co Ltd | Method and device for connecting crossing rails |
| CN1853837A (en) * | 2005-04-27 | 2006-11-01 | 周钟霖 | Cutting tool for milling printing circuit board |
| CN202006299U (en) * | 2011-04-29 | 2011-10-12 | 宜昌永鑫精工科技有限公司 | Tungsten steel welding tool special for tungsten steel PCBs (printed circuit boards) |
| CN102501041A (en) * | 2011-09-28 | 2012-06-20 | 深圳市金洲精工科技股份有限公司 | Method for recycling cutter and method for recycling precision end mill |
| CN102601481A (en) * | 2012-03-20 | 2012-07-25 | 郑四来 | Concentric welding method and device |
| CN106583803A (en) * | 2015-10-14 | 2017-04-26 | 天钻科技股份有限公司 | Diamond coating cutter and manufacturing method thereof |
| CN108000084A (en) * | 2017-11-03 | 2018-05-08 | 深圳市金洲精工科技股份有限公司 | A kind of method for repeatedly recycling old milling cutter |
| CN108723728A (en) * | 2017-04-14 | 2018-11-02 | 玖鑫精密股份有限公司 | Fusing type opposed knife regeneration method and its regeneration pole structure fabrication system |
-
2019
- 2019-05-27 CN CN201910445646.3A patent/CN110039167A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69600474D1 (en) * | 1995-09-06 | 1998-09-03 | Daido Steel Co Ltd | Method and device for connecting crossing rails |
| CN1853837A (en) * | 2005-04-27 | 2006-11-01 | 周钟霖 | Cutting tool for milling printing circuit board |
| CN202006299U (en) * | 2011-04-29 | 2011-10-12 | 宜昌永鑫精工科技有限公司 | Tungsten steel welding tool special for tungsten steel PCBs (printed circuit boards) |
| CN102501041A (en) * | 2011-09-28 | 2012-06-20 | 深圳市金洲精工科技股份有限公司 | Method for recycling cutter and method for recycling precision end mill |
| CN102601481A (en) * | 2012-03-20 | 2012-07-25 | 郑四来 | Concentric welding method and device |
| CN106583803A (en) * | 2015-10-14 | 2017-04-26 | 天钻科技股份有限公司 | Diamond coating cutter and manufacturing method thereof |
| CN108723728A (en) * | 2017-04-14 | 2018-11-02 | 玖鑫精密股份有限公司 | Fusing type opposed knife regeneration method and its regeneration pole structure fabrication system |
| CN108000084A (en) * | 2017-11-03 | 2018-05-08 | 深圳市金洲精工科技股份有限公司 | A kind of method for repeatedly recycling old milling cutter |
Non-Patent Citations (1)
| Title |
|---|
| 陈永镇等: "《车工实践 第2版》", 30 June 1997, 上海科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788504A (en) * | 2019-11-11 | 2020-02-14 | 张家港市锐正精密工具有限公司 | Improved machining process of key end mill |
| CN110788504B (en) * | 2019-11-11 | 2021-06-08 | 张家港市锐正精密工具有限公司 | Improved machining process of key end mill |
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