CN109794860A - A kind of milling Compound Machining iron-based diamond cutter and preparation method thereof - Google Patents
A kind of milling Compound Machining iron-based diamond cutter and preparation method thereof Download PDFInfo
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- CN109794860A CN109794860A CN201910224805.7A CN201910224805A CN109794860A CN 109794860 A CN109794860 A CN 109794860A CN 201910224805 A CN201910224805 A CN 201910224805A CN 109794860 A CN109794860 A CN 109794860A
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Abstract
The invention discloses a kind of milling Compound Machining iron-based diamond cutters and preparation method thereof, tool characteristics are, abrasive material is coat of metal diamond dust, bonding agent is 65~80 parts of iron powder according to mass fraction, 5~10 parts of copper powder, it 5~10 parts and 5~10 parts of non-metallic additive of metallic addition, carries out after mixing cold-rolled sintered.Preparation method are as follows: uniformly mix iron powder, copper powder, metallic addition, non-metallic additive and abrasive material in proportion；Uniformly mixed powder is packed into mold, 400~500MPa is pressurized to, is demoulded after 3~7s of pressure maintaining；Embryo material after demoulding is put into sintering furnace and is sintered, the blank that sintering is completed is connect with knife handle by welding procedure, or cutter head and knife handle are integrally suppressed into integral rear sintering, chip space is processed in cutter end face using electrical discharge machining process, tool surface is modified finally by turning or grinding.High in machining efficiency, long service life of the invention, processing effect is good, has a extensive future.
Description
Technical field
The present invention relates to diamond tool processing technique field more particularly to a kind of iron-based diamonds of milling Compound Machining
Cutter and preparation method thereof and ceramic material accurate grinding, Milling Process technical field.
Background technique
With the arrival in 5G epoch, to avoid shielding action of the metal-back to signal, mobile phone producer is by high-volume using pottery
Ceramic material makes mobile phone shell.In grinding, resin wheel elasticity with higher and intensity, impact resistance is preferable, but by
Big in ceramic material hardness, abrasion of grinding wheel is serious in use, and service life is short, and processing effect is undesirable, processing efficiency
It is extremely low；Common metal bonded wheel is bronze binding agent grinding wheel, is easy to happen blocking, service life in use process
It is short, higher cost；Vitrified abrasive mainly uses import grinding wheel, and processing effect is preferable, and efficiency is higher, but since wearability is inadequate,
Grinding wheel own form change in size is big in process, and durability is not high, and import grinding wheel price is higher, so that processing cost
It is high.
Summary of the invention
The present invention is for plain wheel wearability when being ground ceramic material is low, shape and size precision retentivity is poor, uses
Service life short problem, proposes a kind of milling Compound Machining ceramic material iron-based diamond cutter and preparation method thereof, has wide
Wealthy application prospect.
A kind of iron-based diamond cutter of milling Compound Machining proposed by the present invention, the present invention is with metallic bond and metal
Coating diamond dust is raw material, obtains milling Compound Machining with iron-based diamond cutter.It uses coat of metal bortz powder
End is used as abrasive grain, can increase metallic bond to the holding power of abrasive grain, with the iron-based Buddha's warrior attendant of iron metallic bond as main component
The intensity, hardness and wearability of cutter can be improved in stone cutter；
Abrasive grain is coat of metal diamond dust, and bonding agent is 65~80 parts of iron powder according to mass fraction, copper powder 5~10
Part, 5~10 parts of other metallic additions and 5~10 parts of non-metallic additive carry out cold-rolled sintered after mixing.Metal-plated
Layer choosing Ti, Cu, Ni, W, V, Ta or Zr.
The cold-rolled sintered process steps are as follows:
S1 is uniformly mixed iron powder, copper powder and other metallic additions and non-metallic additive in proportion, is made mixed
Close powder；
Appropriate wetting agent is added after mixing evenly in S2 in diamond dust, and diamond dust is added made from S1 and is mixed
It is mixed in powder；
S3 will be sufficiently mixed uniform powder and be fitted into diamond cutter mold, be pressurized to 400~500MPa, and pressure maintaining 3~
Then 7s is demoulded；
Compacting blank after demoulding is put into sintering furnace and is sintered by S4, and sintering atmosphere is reducing atmosphere, most high fever
Junction temperature is 900~950 DEG C.
It is as shown in Figure 1 the sintering curre of the iron-based diamond cutter of the present invention, temperature error is no more than ± 5 in sintering process
℃.Sintering temperature uniform lift is kept the temperature into 0.8h to 350~450 DEG C in 1~1.5h of sintering starting；500 are at the uniform velocity warming up to through 1h
~600 DEG C, keep the temperature 0.5~1h；It is at the uniform velocity warming up to 700~800 DEG C through 0.8~1h, keeps the temperature 0.5~1 hour；Through 0.6~0.8h
900~950 DEG C are at the uniform velocity warming up to, 0.5~1h is kept the temperature；Cooled to room temperature.
The blank that sintering is completed is connect with knife handle by welding procedure；Or mixed-powder made from S2 and knife handle are suppressed
It is integrally formed compacting blank, is sintered according still further to above-mentioned sintering process.Then added using electrical discharge machining process in cutter end face
Work goes out to hold bits chip space, modifies finally by the mode of turning or grinding to tool surface.
The present invention obtains milling Compound Machining with iron-based gold using metallic bond and coat of metal diamond dust as raw material
Hard rock cutter.It uses coat of metal diamond dust as abrasive grain, increases metallic bond to the holding power of abrasive grain, with iron
Metallic bond intensity, hardness and wearability with higher as main component, so that the shape and size precision of cutter is kept
Property and service life significantly promoted, the process requirements of the hard crisp difficult-to-machine material such as ceramics are met, before wide application
Scape.
Detailed description of the invention
The iron-based diamond cutter sintering curre of Fig. 1 milling Compound Machining.
Specific embodiment
Embodiment 1:
(1) the iron-based diamond cutter of a kind of milling Compound Machining, abrasive material are that granularity is 120#, and concentration is 100%
Nickel plating diamond, bonding agent raw material according to quality specific gravity be 70 parts of iron powder, 10 parts of copper powder, 5 parts of nickel powder, 5 parts of silver powder, other metals
5 parts and 5 parts of non-metallic additive of additive；
(2) iron powder, copper powder, nickel powder, silver powder, metallic addition and non-metallic additive are put into batch mixer and are uniformly mixed
It closes；
(3) wetting agent is added in diamond dust to be stirring evenly and then adding into batch mixer, is mixed with bonding agent powder
It is even；
(4) powder is pressurized to 450MPa, is demoulded after pressure maintaining 5s；
(5) the compacting blank after demoulding is put into sintering furnace and is sintered, be passed through hydrogen shield；
(6) 450 DEG C are warming up to through 1.5h, keep the temperature 0.8h；
(7) 550 DEG C are warming up to through 1h, keep the temperature 0.8h；
(8) 750 DEG C are warming up to through 1h, keep the temperature 0.8h；
(9) 900 DEG C are warming up to through 0.7h, keep the temperature 0.8h, is cooled to room temperature；
(10) milling Compound Machining is obtained with iron-based diamond cutter after electric spark fluting and centreless grinding finishing.
Embodiment 2:
(1) the iron-based diamond cutter of a kind of milling Compound Machining, abrasive material are that granularity is 100#, and concentration is 100%
Nickel plating diamond, raw material according to quality specific gravity be 78 parts of iron powder, 6 parts of copper powder, 3 parts of nickel powder, 3 parts of silver powder, other metallic additions 5
Part and 5 parts of non-metallic additive；
(2) iron powder, copper powder, nickel powder, silver powder, metallic addition and non-metallic additive are put into batch mixer and are uniformly mixed
It closes；
(3) wetting agent is added in diamond dust to be stirring evenly and then adding into batch mixer, is mixed with bonding agent powder
It is even；
(4) powder is pressurized to 400MPa, is demoulded after pressure maintaining 6s；
(5) the compacting blank after demoulding is put into sintering furnace and is sintered, be passed through hydrogen shield；
(6) 450 DEG C are warming up to through 1.5h, keep the temperature 1h；
(7) 600 DEG C are warming up to through 1h, keep the temperature 1h；
(8) 800 DEG C are warming up to through 1h, keep the temperature 1h；
(9) 920 DEG C are warming up to through 0.8h, keep the temperature 1h, is cooled to room temperature；
(10) milling Compound Machining is obtained with iron-based diamond cutter after electric spark fluting and centreless grinding finishing.
By the iron-based diamond cutter of the milling Compound Machining in embodiment 1-2 and the common copper base diamond of commercially available same specification
The grinding tool experimental data that processed alumina ceramics measure under the same testing conditions is as shown in table 1:
Table 1
| Classification | Surface roughness Ra (μm) | Grinding efficiency (s/ piece) | Service life (piece) |
| Common copper base diamond grinding tool | 0.66 | 104 | 1428 |
| Embodiment 1 | 0.72 | 96 | 1936 |
| Embodiment 2 | 0.78 | 93 | 2071 |
Claims (7)
1. a kind of iron-based diamond cutter of milling Compound Machining, which is characterized in that with metallic bond and coat of metal Buddha's warrior attendant
Stone powder is raw material, obtains milling Compound Machining with iron-based diamond cutter；Using coat of metal diamond dust as abrasive grain,
Increase metallic bond and knife is improved with iron metallic bond as main component iron-based diamond cutter to the holding power of abrasive grain
Intensity, hardness and the wearability of tool.
2. a kind of iron-based diamond cutter of milling Compound Machining according to claim 1, which is characterized in that the mill of bistrique
Material is the diamond after the coat of metal, and coated metal selects Ti, Cu, Ni, W, V, Ta or Zr metal.
3. a kind of iron-based diamond cutter of milling Compound Machining according to claim 1, which is characterized in that metal bonding
The raw material of agent includes: 65~80 parts of iron powder according to mass fraction, and 5~10 parts of copper powder, 5~10 parts of other metallic additions and non-
5~10 parts of metallic addition.
4. a kind of preparation method that milling Compound Machining is carried out with iron-based diamond cutter according to claim 1, feature
It is, using cold-rolled sintered process, comprising the following steps:
(1) iron powder, copper powder and other metallic additions and non-metallic additive are uniformly mixed in proportion；
(2) appropriate wetting agent is added in diamond dust after mixing evenly, diamond dust is added in above-mentioned metal powder
It is mixed；
(3) uniform powder will be sufficiently mixed and be packed into mold, be pressurized to 400~500MPa, then 3~7s of pressure maintaining is demoulded；
(4) the compacting embryo material after demoulding is put into sintering furnace and is sintered, sintering atmosphere is reducing atmosphere, highest sintering temperature
Degree is 900~950 DEG C.
5. a kind of iron-based diamond cutter of milling Compound Machining according to claim 1, which is characterized in that bistrique and knife
Handle is connected using welding procedure, or will be directly sintered again after bistrique and knife handle compacting integrally when being pressed into embryo material.
6. a kind of iron-based diamond cutter of milling Compound Machining according to claim 1, which is characterized in that bistrique end face
The processing technology for holding bits chip space is electrical discharge machining.
7. a kind of iron-based diamond cutter of milling Compound Machining according to claim 1, which is characterized in that surfacing
The processing method that technique uses turning or grinding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910224805.7A CN109794860A (en) | 2019-03-24 | 2019-03-24 | A kind of milling Compound Machining iron-based diamond cutter and preparation method thereof |
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| CN201910224805.7A CN109794860A (en) | 2019-03-24 | 2019-03-24 | A kind of milling Compound Machining iron-based diamond cutter and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720285A (en) * | 2020-12-24 | 2021-04-30 | 深圳市宏通新材料有限公司 | Method for manufacturing diamond grinding tool |
| CN114274061A (en) * | 2022-01-01 | 2022-04-05 | 苏州赛尔科技有限公司 | Iron-based slotted metal cutting knife and preparation method thereof |
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|---|---|---|---|---|
| CN1067002A (en) * | 1991-05-21 | 1992-12-16 | 森南产品公司 | Super hard abrasive is plated the improved technology that is applied on the honing tool |
| CN1562569A (en) * | 2004-04-06 | 2005-01-12 | 北京工业大学 | Superhard abrasive grinding wheel of metal binding agent eletrolyzable online, and preparation method |
| CN1646267A (en) * | 2002-04-11 | 2005-07-27 | 昭和电工株式会社 | Metal-coated abrasives, grinding wheel using metal-coated abrasives and method of producing metal-coated abrasives |
| WO2005075142A1 (en) * | 2004-02-09 | 2005-08-18 | Shinhan Diamond Industrial Co., Ltd. | Diamond tools with multilayers of abrasive grain and method for manufacturing the same |
| CN102642022A (en) * | 2012-04-05 | 2012-08-22 | 燕山大学 | Superhard abrasive particle coated with active metal and silicon and method for producing superhard abrasive particle |
| CN104139182A (en) * | 2014-07-22 | 2014-11-12 | 燕山大学 | Method for preparing plated layer on surface of ultra-hard grinding material |
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2019
- 2019-03-24 CN CN201910224805.7A patent/CN109794860A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067002A (en) * | 1991-05-21 | 1992-12-16 | 森南产品公司 | Super hard abrasive is plated the improved technology that is applied on the honing tool |
| CN1646267A (en) * | 2002-04-11 | 2005-07-27 | 昭和电工株式会社 | Metal-coated abrasives, grinding wheel using metal-coated abrasives and method of producing metal-coated abrasives |
| WO2005075142A1 (en) * | 2004-02-09 | 2005-08-18 | Shinhan Diamond Industrial Co., Ltd. | Diamond tools with multilayers of abrasive grain and method for manufacturing the same |
| CN1562569A (en) * | 2004-04-06 | 2005-01-12 | 北京工业大学 | Superhard abrasive grinding wheel of metal binding agent eletrolyzable online, and preparation method |
| CN102642022A (en) * | 2012-04-05 | 2012-08-22 | 燕山大学 | Superhard abrasive particle coated with active metal and silicon and method for producing superhard abrasive particle |
| CN104139182A (en) * | 2014-07-22 | 2014-11-12 | 燕山大学 | Method for preparing plated layer on surface of ultra-hard grinding material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720285A (en) * | 2020-12-24 | 2021-04-30 | 深圳市宏通新材料有限公司 | Method for manufacturing diamond grinding tool |
| CN112720285B (en) * | 2020-12-24 | 2022-05-17 | 深圳市宏通新材料有限公司 | Method for manufacturing diamond grinding tool |
| CN114274061A (en) * | 2022-01-01 | 2022-04-05 | 苏州赛尔科技有限公司 | Iron-based slotted metal cutting knife and preparation method thereof |
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