CN1099928C - 制造带有夹紧孔的刀片的方法 - Google Patents

制造带有夹紧孔的刀片的方法 Download PDF

Info

Publication number
CN1099928C
CN1099928C CN98806810A CN98806810A CN1099928C CN 1099928 C CN1099928 C CN 1099928C CN 98806810 A CN98806810 A CN 98806810A CN 98806810 A CN98806810 A CN 98806810A CN 1099928 C CN1099928 C CN 1099928C
Authority
CN
China
Prior art keywords
cemented carbide
stopper
sintering
hole
blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN98806810A
Other languages
English (en)
Other versions
CN1268910A (zh
Inventor
彼得·利特克
戴维·登博尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik AB
Original Assignee
Sandvik AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandvik AB filed Critical Sandvik AB
Publication of CN1268910A publication Critical patent/CN1268910A/zh
Application granted granted Critical
Publication of CN1099928C publication Critical patent/CN1099928C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F2003/1042—Sintering only with support for articles to be sintered
    • B22F2003/1046—Sintering only with support for articles to be sintered with separating means for articles to be sintered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2204/00—End product comprising different layers, coatings or parts of cermet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Drilling And Boring (AREA)

Abstract

本发明涉及一种在高温和高压下(HP/HT处理)的一容器内将超硬磨料烧结并同时粘结到一硬质合金体上的方法，所述硬质合金体与至少一个其他的硬质合金体接触，该其他硬质合金体在烧结后被移去。在高压/高温处理过程中，彼此接触的至少一个表面上涂有厚度为1-10μm耐火氧化物层。该方法特别应用于具有超硬磨料和用于夹紧到刀架上的孔的硬质合金切削刀片，硬质合金塞子在HP/HT处理中填充所述孔，烧结后塞子被移去。最好，刀片坯料和塞子均被涂覆。

Description

制造带有夹紧孔的刀片的方法
本发明涉及制造多晶金刚石或立方氮化硼切削刀片的高压/高温(HP/HT)工艺。具体地说，本发明涉及在HP/HT工艺上的某种修改，从而使切削刀片的产品经济性和夹紧的可能性得以改进。
金刚石是加工例如铜、镁和铝等各种有色合金的最好的刀具材料，而立方氮化硼(cBN)非常适合于高速加工硬化钢、冷硬铸铁和铸铁。
进行这些加工的刀片被称为PCD(多晶金刚石压合体)或PcBN(多晶立方氮化硼压合体)，这种刀片包括一个硬质合金体，其具有在上述高温和高压下施加的金刚石或cBN层，在该高温和高压下金刚石或cBN为一稳定的相或者刀片在至少一个角部或沿一个通过钎焊被固定的边缘上具有金刚石或cBN体。
加工这种刀片的方法在例如美国专利3,745,623、3,743,489、4,525,179、5,598,621、和5,676,496中进行了说明。
很多用于机加工的刀具在其中心都具有孔以保证刀具尽可能地夹紧到刀架上。对于钎焊的刀片，这可以通过将PCD/cBN尖端钎焊到已经具有一孔的一个主体上来实现。否则，该孔还要在以后加工出来，这样做成本很高，因为这种加工通常涉及放电加工(EDM)。
美国专利申请08/601,631公开了一种制造带有用于固定在刀架上的夹紧孔的切削刀片的方法，其中在一高温和高压的容器中，一超硬的磨料被烧结并同时被粘结到带有一孔的烧结硬质合金体上。在烧结过程中，该孔被一个塞子塞住，在烧结后塞子被取出。塞子的材料可包括耐火材料、硬质合金、或由一耐火材料套筒围绕的硬质合金。耐火材料最好为铌。这种方法的缺点是耐火材料不能承受高压和高温从而在硬质合金刀片中产生裂纹。
根据本发明，孔的制造是通过提供一个具有一孔的硬质合金坯料来实现的。在HP/HT处理的过程中，该孔装有一个由硬质合金组成的塞子。塞子和/或硬质合金具有一薄层耐火氧化物涂料。在HP/HT处理后，塞子很容易通过机械压力取出，而坯料被磨制成最终的形状和尺寸。
图1是根据本发明改进的HP/HT单元的截面图。
在这种类型的装置中同时施加高压和高温的技术是现有技术所公知的。现在参看图1，HP/HT单元10装配在受HP/HT条件控制的装置中的空间内。该组件包括壳体11，该壳体包括圆柱形套筒12和屏蔽金属盖13，屏蔽金属从包括Zr、Ti、Ta、Nb、和Mo的一组元素中选择。
烧结和涂有硬质合金的刀片坯料16位于杯12中，该坯料具有一孔。孔可以是圆柱形但也可以是其他的形状，例如完全的或部分的锥形或者在一侧或两侧有倒角。该孔中装有一个塞子25，其具有与孔相同的几何形状。为了避免在塞子和硬质合金坯料之间出现不希望的烧结，塞子25上涂有一层薄的Al2O3层20，但也可在硬质合金坯料上涂一层薄的Al2O3层以避免在硬质合金和单元的耐火材料之间发生不希望的表面反应。该薄Al2O3层为1-10μm，优选为2-8μm，最好约5μm厚。优选地，塞子和硬质合金坯料均被涂覆。优选地，塞子包括硬质合金，其成分基本上与硬质合金坯料16的成分相同。
包含金刚石或cBN粉末的一混合物被填充到单元内例如形成一顶层14或填充到如美国专利5,598,621和5,676,426中公开的凹槽内，或采用其他需要的方式。单元被封闭并被置于HP/HT装置中。压力和温度被增加到使金刚石或cBN稳定足够长时间的程度，从而使烧结发生。然后，该填料被允许在压力下短时间冷却，并在减压后重新获得压合体。
塞子可通过施加机械压力取出。最后，压合体被磨成所需要的最终的尺寸和形状，例如圆形、三角形或方形。
本发明已经参照带孔刀片的制造进行了描述。很显然，该方法也可被应用到其他情况，即在HP/HT处理过程中一起烧结两个或多个硬质合金部分，或者在高压单元组件中的部件之间的其他表面反应被避免。作为Al2O3的替代，也可使用象Y2O3、ZrO2的耐火氧化物。
实例
制备一个硬质合金圆柱形盘，其成分为WC+重量百分比为16％的Co，直径约22mm，厚度6mm，其具有直径为4mm的圆锥形中心孔，沿着盘周围表面等距地分布着四个凹槽。凹槽具有基本上半圆形的横截面，其直径约4mm。硬质合金盘被置于一铌制杯中，一塞子被挤入盘的孔中，该硬质合金塞子直径为5mm，成分为WC+重量百分比为16％的Co，其涂有一个5μm的Al2O3层。凹槽被一个cBN粉末混合物填充，其成分相当于兆金刚石工业等级(Megadiamond Commercial Grade)MN50，然后容器被密封并根据在美国专利5,115,697中描述的工艺进行高温和高压处理。在冷却后，获得了压合体。通过施加轻微的机械压力，塞子被取出。盘然后被磨成刀片，型号WNGA 080408，其中心孔可被紧固地夹紧在刀架上。

Claims (5)

1.一种制造硬质合金体的方法，在高温和高压的条件下的容器内将超硬磨料烧结并同时粘结到该硬质合金体上，从而所述硬质合金体与至少一个其他的硬质合金体接触，该其他硬质合金体在烧结后被移去，其特征在于，在高压/高温处理过程中，彼此接触的至少一个表面上涂有厚度为1-10μm耐火氧化物层。
2.根据权利要求1所述的方法，其特征在于，要装备超硬磨料的所述硬质合金是一个切削刀片坯料，其带有用于夹紧到刀架上的孔，所述至少一个其他的硬质合金体是在烧结过程中填充所述孔的一个硬质合金塞子，在烧结之后塞子被移去且所述坯料被磨制成具有最终形状和尺寸的刀片。
3.根据权利要求2所述的方法，其特征在于，刀片坯料和塞子均被涂覆。
4.根据权利要求2所述的方法，其特征在于，所述塞子的硬质合金的成分与切削刀片坯料的硬质合金成分相同。
5.根据前述任一权利要求所述的方法，其特征在于，所述耐火氧化物为Al2O3、Y2O3、或ZrO2。
CN98806810A 1997-07-08 1998-06-18 制造带有夹紧孔的刀片的方法 Expired - Fee Related CN1099928C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE97026611 1997-07-08
SE9702661A SE511587C2 (sv) 1997-07-08 1997-07-08 Sätt att tillverka skär med hål för fastspänning

Publications (2)

Publication Number Publication Date
CN1268910A CN1268910A (zh) 2000-10-04
CN1099928C true CN1099928C (zh) 2003-01-29

Family

ID=20407707

Family Applications (1)

Application Number Title Priority Date Filing Date
CN98806810A Expired - Fee Related CN1099928C (zh) 1997-07-08 1998-06-18 制造带有夹紧孔的刀片的方法

Country Status (11)

Country Link
US (1) US6287352B1 (zh)
EP (1) EP0996520B1 (zh)
JP (1) JP2001509544A (zh)
KR (1) KR20010014353A (zh)
CN (1) CN1099928C (zh)
AT (1) ATE228908T1 (zh)
CA (1) CA2289937A1 (zh)
DE (1) DE69809912T2 (zh)
SE (1) SE511587C2 (zh)
WO (1) WO1999002289A1 (zh)
ZA (1) ZA985934B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6120570A (en) * 1996-02-14 2000-09-19 Smith International Process for manufacturing inserts with holes for clamping
US7726420B2 (en) * 2004-04-30 2010-06-01 Smith International, Inc. Cutter having shaped working surface with varying edge chamfer
EP2376252A2 (en) * 2008-12-10 2011-10-19 No Screw Ltd. A cutting tool holder and a cutting insert therefor
KR101928112B1 (ko) 2010-12-31 2018-12-11 다이아몬드 이노베이션즈, 인크. 다결정성 보디에 구멍 및 카운터싱크를 생성하는 방법
GB201205673D0 (en) * 2012-03-30 2012-05-16 Element Six Abrasives Sa Polycrystalline superhard material and method of making same
US20140086695A1 (en) * 2012-09-25 2014-03-27 Kennametal Inc. Processes and apparatuses for making cutting tool inserts
CN108588596B (zh) * 2018-04-24 2020-04-28 深圳市海明润超硬材料股份有限公司 一种提高金刚石复合片抗冲击性能的方法
CN110860693A (zh) * 2019-11-28 2020-03-06 中国有色桂林矿产地质研究院有限公司 一种中空结构的超硬材料聚晶多层复合片及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816003B2 (ja) * 1975-08-25 1983-03-29 株式会社日立製作所 複合集電子の製法
JPS6210201B2 (zh) * 1978-10-10 1987-03-05 Green Cross Corp
US5082623A (en) * 1989-06-01 1992-01-21 Abb Stal Ab Method of manufacturing a split circular ring

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743489A (en) 1971-07-01 1973-07-03 Gen Electric Abrasive bodies of finely-divided cubic boron nitride crystals
US3745623A (en) 1971-12-27 1973-07-17 Gen Electric Diamond tools for machining
US4525179A (en) 1981-07-27 1985-06-25 General Electric Company Process for making diamond and cubic boron nitride compacts
JPS6210201A (ja) 1985-07-05 1987-01-19 Tatsuro Kuratomi 通電加熱と機械加圧を行う加熱加圧プレス装置およびその製造法
US5115697A (en) 1991-08-16 1992-05-26 Smith International, Inc. Diamond rotary cutter flute geometry
DE4340652C2 (de) 1993-11-30 2003-10-16 Widia Gmbh Verbundwerkstoff und Verfahren zu seiner Herstellung
ZA963789B (en) 1995-05-22 1997-01-27 Sandvik Ab Metal cutting inserts having superhard abrasive boedies and methods of making same
US5598621A (en) 1995-05-22 1997-02-04 Smith International Inc. Method of making metal cutting inserts having superhard abrasive bodies
US6120570A (en) * 1996-02-14 2000-09-19 Smith International Process for manufacturing inserts with holes for clamping
JP2001501254A (ja) * 1996-04-15 2001-01-30 ダイナメット・ホールディングズ・インコーポレイテッド ネットシェープを備えたダイ及びモールド、及び同左の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816003B2 (ja) * 1975-08-25 1983-03-29 株式会社日立製作所 複合集電子の製法
JPS6210201B2 (zh) * 1978-10-10 1987-03-05 Green Cross Corp
US5082623A (en) * 1989-06-01 1992-01-21 Abb Stal Ab Method of manufacturing a split circular ring

Also Published As

Publication number Publication date
WO1999002289A1 (en) 1999-01-21
EP0996520B1 (en) 2002-12-04
JP2001509544A (ja) 2001-07-24
SE9702661L (sv) 1999-01-09
US6287352B1 (en) 2001-09-11
CN1268910A (zh) 2000-10-04
DE69809912T2 (de) 2003-05-28
DE69809912D1 (de) 2003-01-16
SE9702661D0 (sv) 1997-07-08
CA2289937A1 (en) 1999-01-21
EP0996520A1 (en) 2000-05-03
ZA985934B (en) 1999-01-27
SE511587C2 (sv) 1999-10-25
ATE228908T1 (de) 2002-12-15
KR20010014353A (ko) 2001-02-26

Similar Documents

Publication Publication Date Title
US4690691A (en) Polycrystalline diamond and CBN cutting tools
EP0046374B1 (en) Tool insert
JP4988566B2 (ja) 割り出し可能な切削インサート及びその製造方法
US4714385A (en) Polycrystalline diamond and CBN cutting tools
EP1350593B1 (en) Method of making metal cutting inserts having superhard abrasive bodies
US6447560B2 (en) Method for forming a superabrasive polycrystalline cutting tool with an integral chipbreaker feature
US8052765B2 (en) Contoured PCD and PCBN for twist drill tips and end mills and methods of forming the same
US4797138A (en) Polycrystalline diamond and CBN cutting tools
EP1631407B1 (en) Indexable cutting inserts and methods for producing the same
US4702649A (en) Polycrystalline diamond and CBN cutting tools
EP2864070B1 (en) Method for making cutting inserts
EP0357380A2 (en) Manufacture of abrasive products
US6120570A (en) Process for manufacturing inserts with holes for clamping
CN1099928C (zh) 制造带有夹紧孔的刀片的方法
EP0357379B1 (en) Manufacture of abrasive products
AU709461B2 (en) Process for manufacturing inserts with holes for clamping
EP0988125A1 (en) Method of making endmills
JPH0111362Y2 (zh)

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee