CN206373362U - The base substrate that powder metallurgy is made - Google Patents
The base substrate that powder metallurgy is made Download PDFInfo
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- CN206373362U CN206373362U CN201621492636.3U CN201621492636U CN206373362U CN 206373362 U CN206373362 U CN 206373362U CN 201621492636 U CN201621492636 U CN 201621492636U CN 206373362 U CN206373362 U CN 206373362U
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- base substrate
- powder metallurgy
- powder
- cermet
- blank
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Abstract
The base substrate that a kind of powder metallurgy is made, it is made up of cermet or hard alloy, a diameter of 3mm~75mm；Spiral angle is 5 °~60 °.Cermet or hard alloy are first manufactured by blank using moulding process, then blank is placed in powder is sintered and obtained by high temperature insostatic pressing (HIP) method.The base substrate that the powder metallurgy provided by the utility model is made, it is only necessary to retain about 1mm finishing fluting surplus, so that the grinding time of fluting reduces more than 50%, the overall cutter manufacture time shortens 30%.
Description
Technical field
The utility model is related to a kind of metal body, more particularly to a kind of base substrate being made up of powdered metallurgical material, is used for
Manufacture cutter.
Background technology
Powder metallurgy is to produce metal dust or made with metal dust (or mixture of metal dust and non-metal powder)
For raw material, by shaping and sintering, the technology of manufacture metal material, composite and all kinds product.Powder smelting
Jin Fayu production ceramics have similar place, belong to sintered powder technique, therefore, PM technique can also be used for ceramic material
The preparation of material.
The sintered metal product industry of broad sense has included iron-stone cutter, hard alloy, magnetic material and sintered metal product
Deng.The sintered metal product industry of narrow sense only refers to sintered metal product, including powdered metal parts (accounting for the overwhelming majority), oiliness bearing
With metal ejection formation product etc..
Hard alloy is using the carbide of high rigidity refractory metal (WC, TiC) micron powder as main component, with cobalt
(Co) or nickel (Ni), molybdenum (Mo) are binding agent, the sintered metal product sintered in vacuum drying oven or hydrogen reducing furnace also belongs to
In a class powdered metallurgical material.In addition, IVB, VB, the carbide of group vib metal, nitride, boride etc., due to hardness and molten
Point is especially high, and hard alloy is also referred to as in the lump.
Cermet was not in order that ceramics not only can again have been allowed broken with high temperature resistant, and people add in ceramic clay making
A little metal powders, therefore cermet has been made, it falls within a class powder metallurgy material.Ceramic phase in cermet is that have height
The oxide or infusible compound of fusing point, high rigidity, metal phase be mainly transition elements (iron, cobalt, nickel, chromium, tungsten and molybdenum etc.) and
Its alloy.
Metal based ceramic metal is to add oxide fine powder in metallic matrix to be made, also known as disperse reinforcing material, such as：Burn
Tie aluminium (aluminium-aluminum oxide), sintering beryllium (beryllium-beryllium oxide) and TD nickel (nickel-thorium oxide) etc..By one or more of ceramic phases and metal
The composite that phase or alloy are constituted.
Ceramic based ceramic metal can be mainly subdivided into：Oxide base cermet, such as：With aluminum oxide, zirconium oxide, oxidation
Magnesium, beryllium oxide etc. are matrix, are composited with tungsten, chromium or cobalt；Carbide-base ceramics, such as：With titanium carbide, carbonization
Silicon, tungsten carbide etc. are matrix, are formed with the metal composite such as metallic cobalt, nickel, chromium, tungsten, molybdenum；Nitride based ceramic metal, such as：With nitrogen
It is matrix to change titanium, boron nitride, silicon nitride and tantalum nitride；Boride-base cerment, such as：With titanium boride, tantalum boride, vanadium boride,
Chromium boride, zirconium boride, tungsten boride, molybdenum boride, niobium (Nb) boride, hafnium boride etc. are matrix, are formed with part metals Material cladding；Silication
Thing based ceramic metal, such as：With silication manganese, iron suicide, cobalt silicide, nickle silicide, titanium silicide, zirconium silicide, niobium silicide, vanadium silicide, silicon
It is matrix to change niobium, tantalum silicide, molybdenum silicide, tungsten silicide, barium slilicide etc., is formed with part or trace meter Material cladding.
Powder metallurgy has unique chemical composition and machinery, physical property, and these performances are with traditional founding side
What method can not be obtained.Porous, half fine and close or full dense material and product, such as oil-containing can be directly prepared into PM technique
Bearing, gear, cam, guide rod and cutter etc., are a kind of few without Cutting Process.
Powder metallurgical technique includes：
1) preparation of material powder.Existing milling method can substantially be divided into two classes：Mechanical Method and physical-chemical process.And machine
Tool method can be divided into：Mechanical crushing and atomization；Physical-chemical process is divided into again：Couple corrosion method, reducing process, chemical combination method, reduction-change
Legal, vapour deposition process, liquid phase deposition and electrolysis.What is be wherein most widely used is reducing process, atomization and electrolysis
Method.
2) powder compacting is briquet.The purpose of shaping is the pressed compact that definite shape and size is made, and is made it have certain
Density and intensity.The method of shaping is essentially divided into extrusion forming and pressureless compacting.Applied in extrusion forming is at most mould
It is molded.In addition it is also possible to use the making that 3D printing technique carries out briquet.
3) sintering of briquet.Sintering is the key process in powder metallurgical technique.Pressed compact after shaping is made by sintering
It obtains required final physical mechanical performance.
4) the postorder processing of product.Processing after sintering, can take various ways according to the difference of product requirement.Such as：
Finishing, immersion oil, machining, heat treatment and plating etc..
Cermet/hard alloy cutter is typically carried out outer by the cylindrical stock that cermet/hard alloy is made
Justify the process such as grinding, fluting and grinding edge and obtain.
There is many defects in this processing method, such as：The stock removal of cylindricalo grinding and fluting grinding is all very big, not only needs
Powerful device is supported the use, this also proposes more requirements to fund input, can also work in-process generation cermet/hard
The powder of alloy, these powder can not be reclaimed in time, and environment will be polluted.Nonetheless, existing processing method takes
Longer, corresponding items manufacturing cost is also larger.
Meanwhile, cermet is although wear-resisting, but toughness is not often good, if making elongated cylinder rotating tool, holds
Easily because bend resistance power is not enough and is broken, cause tool failures.
In order to solve these technical problems, technical staff presets the cutter such as cell body and transition region in blank forming process
Part is constructed, but in forming process, blank occurs bending and deformation, and the cutter construction needed for can not obtaining.
Therefore, blank is mainly molded by technical staff by the way of low pressure sintering, although change can be overcome to a certain degree
The technical problem of shape, but low pressure sintering is not relatively fine and close, poor-performing.
In order to solve the problem of low pressure sintering technique is to blank form and aspect of performance, separately there is technology by precalculating shape
The mode of variable, shape and specification to base substrate before sintering make corresponding adjustment, to obtain satisfactorily base after sintering
Material, but it is not disclosed for the particular content of this technology.
Utility model content
A purpose of the present utility model is to provide the base substrate that a kind of powder metallurgy is made, with structures such as default cell bodies
Make.
Another purpose of the present utility model is to provide the base substrate that a kind of powder metallurgy is made, in cutter manufacture should
With the cracking of cutter for improving processing efficiency and reducing in processing is scrapped.
Cutter for machining field, such as：Aperture knife tool, milling cutter and boring cutter etc., its outward appearance are generally presented with overall
Cylinder is relatively conventional, also with the feature such as cell body and cutting end part.From processing efficiency angle, these cutters typically have 2 pieces
Cutting edge above, cutting edge is also arranged at cutting end part more typically.
The base substrate that a kind of powder metallurgy is made, its a diameter of 3mm~75mm, prioritizing selection 8mm~35mm.
The base substrate that another powder metallurgy is made, its spiral angle is 0 °~60 °, 0 °~35 ° of prioritizing selection, especially
27 °~33 ° such as：27 °, 28 °, 29 °, 30 °, 31 °, 32 ° and 33 °.
The base substrate that another powder metallurgy is made, the spiral that with good grounds angle produces for 0 °~60 ° of helical angle thereon
Shape groove, the depth capacity of helical groove is not less than 1% at base substrate maximum gauge, also no more than at minimum diameter
45%.The length of helical groove is less than the total length of base substrate.
The beneficial effect that technical solutions of the utility model are realized：
The base substrate that the utility model is provided, can substantially reduce the notching time of follow-up grinding knife tool, this part-time accounts for knife
Have more than the 65% of the grinding time.
Base substrate made from the forming method for the base substrate that the powder metallurgy provided by the utility model is made, it is only necessary to retain about
1mm finishing fluting surplus, so that the grinding time of fluting reduces more than 50%, the overall cutter manufacture time contracts
It is short by 30%.
Brief description of the drawings
The schematic diagram for the embodiment of base substrate one that Fig. 1 is made for the powder metallurgy that the utility model is provided.
Embodiment
The technical solution of the utility model is described in detail below in conjunction with accompanying drawing.The utility model embodiment is only to illustrate this
The technical scheme of utility model and it is unrestricted, although the utility model is described in detail with reference to preferred embodiment, ability
Domain it is to be appreciated by one skilled in the art that can be modified to the technical scheme of utility model or equivalent substitution, without de-
From the spirit and scope of technical solutions of the utility model, it all should cover in right of the present utility model.
The base substrate that the powder metallurgy of the present embodiment is made is as shown in figure 1, its a diameter of 8mm~35mm, spiral angle is 5 °
~60 °, length is 40mm~250mm.The helical groove that with good grounds angle produces for 0 °~60 ° of helical angle thereon, spiral shell
The depth capacity of rotation shape groove is not less than 1% at base substrate maximum gauge, also 45% no more than at minimum diameter.Helical form is recessed
The length of groove is less than the total length of base substrate.
The base substrate solves blank common thermal deformation and shrinkage phenomenon in sintering using following forming method so that base substrate
Construction meet design requirement, be easy to later use, improve manufacture efficiency.Specific method is：
The method for first passing through molding, blank is pressed into by cermet/hard alloy powder.Such as：Gold is inserted in mould
After category ceramics or hard alloy powder, it is made in carrying out molding under 5T~100T pressure, molding pressure prioritizing selection 10T.
For another example：Inserted in mould and the preforming cutter base of molding acquisition is first passed through after cermet or hard alloy powder
Body, then carries out isostatic pressed processing to preforming cutter base substrate and obtains.It is preferential using liquid isostatic cool pressing side in the present embodiment
Formula, pressure is that blank is made in 5T~200T, especially 100T.
Then, by the blank being made carry out it is pre-sintered (referring to：CN102632261B), temperature is such as：140 DEG C~1100 DEG C,
Time is such as：10 minutes~360 minutes.
Finally, pre-sintered blank is integrally embedded in indium sesquioxide powder and is compacted latter with high temperature insostatic pressing (HIP)
(HIP) method is sintered to base substrate, be passed through argon gas (be used for pressurize and atmosphere protection), hydrogen (being used for and volatile matter reaction) and
Nitrogen (is used to pressurize and atmosphere protection), and base substrate is made.
Blank produces contraction with heating, and closely knit indium sesquioxide powder can play automatic support, the effect of pad seam,
Blank is helped to keep original shape, such as：Cell body is not deformed upon, and spiral angle keeps design requirement.
Claims (4)
1. the base substrate that a kind of powder metallurgy is made, it is characterised in that the base substrate is made up of cermet or hard alloy, diameter
For 3mm~75mm；The helical groove that with good grounds angle produces for 0 °~60 ° of helical angle thereon, the maximum of the groove
Depth is not less than 1% at base substrate maximum gauge, and 45% no more than at minimum diameter；The length of the groove is less than institute
State the total length of base substrate.
2. the base substrate that powder metallurgy according to claim 1 is made, it is characterised in that described base substrate includes more than a kind area
Section, a diameter of 3mm~75mm of each section.
3. the base substrate that powder metallurgy according to claim 1 is made, it is characterised in that described blank diameter be 8mm~
35mm。
4. the base substrate that powder metallurgy according to claim 1 is made, it is characterised in that described spiral angle is 0 °~
35°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492636.3U CN206373362U (en) | 2016-12-31 | 2016-12-31 | The base substrate that powder metallurgy is made |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492636.3U CN206373362U (en) | 2016-12-31 | 2016-12-31 | The base substrate that powder metallurgy is made |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206373362U true CN206373362U (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621492636.3U Active CN206373362U (en) | 2016-12-31 | 2016-12-31 | The base substrate that powder metallurgy is made |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108262481A (en) * | 2016-12-31 | 2018-07-10 | 上海名古屋精密工具股份有限公司 | Green body made of powder metallurgy and its forming method and purposes |
-
2016
- 2016-12-31 CN CN201621492636.3U patent/CN206373362U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108262481A (en) * | 2016-12-31 | 2018-07-10 | 上海名古屋精密工具股份有限公司 | Green body made of powder metallurgy and its forming method and purposes |
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