JPH02209404A - Manufacture of super hard alloy tool - Google Patents
Manufacture of super hard alloy toolInfo
- Publication number
- JPH02209404A JPH02209404A JP2897189A JP2897189A JPH02209404A JP H02209404 A JPH02209404 A JP H02209404A JP 2897189 A JP2897189 A JP 2897189A JP 2897189 A JP2897189 A JP 2897189A JP H02209404 A JPH02209404 A JP H02209404A
- Authority
- JP
- Japan
- Prior art keywords
- hard alloy
- super hard
- molding
- pipe
- centrifugal
- 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.)
- Pending
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000000737 periodic effect Effects 0.000 claims abstract 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract 2
- 229910052742 iron Inorganic materials 0.000 claims abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract 2
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 150000004767 nitrides Chemical class 0.000 claims abstract 2
- 229910052721 tungsten Inorganic materials 0.000 claims abstract 2
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000011812 mixed powder Substances 0.000 abstract description 3
- 239000011268 mixed slurry Substances 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 17
- 238000001125 extrusion Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 2
- 240000000220 Panda oleosa Species 0.000 description 1
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は耐摩耗性に優れた、切削用及び耐摩耗用の超硬
質合金工具の製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a superhard metal tool for cutting and wear-resistant use, which has excellent wear resistance.
従来、超硬合金の成型方法はその用途・形状により一軸
金型成型法、冷間静水圧法、射出成型及び押出し成型等
の方法が用いられている。Conventionally, methods for molding cemented carbide include uniaxial die molding, cold isostatic pressing, injection molding, and extrusion molding, depending on the purpose and shape of the cemented carbide.
しかし、パイプ類の成型は、押出し成型法、射出成型及
び静水圧成型法が適用されているるか、これらの成型法
は、特に押出し成型法、射出成型法では、小径サイズで
はある程度製造出来るが、径により、困難になる。また
静水圧成型法、特にラバープレ法で芯に型を使用して全
周からプレスする方法で一部製作されているが、外周部
をプレス後研削するため効率が悪い等の欠点がある。However, extrusion molding, injection molding, and isostatic pressure molding are used to mold pipes, and these molding methods, especially extrusion molding and injection molding, can produce small-diameter sizes to some extent. , becomes difficult depending on the diameter. In addition, some parts are manufactured using the hydrostatic molding method, especially the rubber press method, in which a die is used as the core and pressed from the entire circumference, but this method has disadvantages such as inefficiency because the outer circumference is ground after pressing.
そのため、成型方法及び高能率化の特長を維持しながら
、その欠点を解消し新たな、超硬質合金の成型方法を提
供するものである。Therefore, the present invention aims to provide a new method for molding superhard alloys, which eliminates the drawbacks of the molding method while maintaining its high efficiency.
すなわち、本発明は、ＷＣ等の比較的密度の高い粉末の
混合物、または造粒粉末を用いて、遠心成型することを
特徴とする超硬質合金の成型方法に関し、パイプ状の製
品の大量生産を可能にするものである。That is, the present invention relates to a method for molding a cemented carbide, which is characterized by centrifugal molding using a relatively dense powder mixture such as WC or granulated powder, and is capable of mass producing pipe-shaped products. It is what makes it possible.
本発明は上記実情に鑑み成されたものであり遠心成型方
法の特徴である、高圧力が簡易に得られ、かつ、量産性
に優れることを応用したものである。The present invention was developed in view of the above circumstances, and takes advantage of the characteristics of the centrifugal molding method, which are that high pressure can be easily obtained and that it is excellent in mass production.
遠心成型法は鋳造等でパイプ類の大量生産に適用されて
いるが、粉末の成型に関してはその具体例はほとんどな
い。The centrifugal molding method is applied to the mass production of pipes by casting, etc., but there are few concrete examples of its use in powder molding.
本発明は超硬質合金の混合粉末、スラリーまたは造粒粉
末を金属パイプ等の内部に充填、密封し。In the present invention, a mixed powder, slurry, or granulated powder of ultra-hard alloy is filled and sealed inside a metal pipe, etc.
このパイプを遠心成型機に投入し遠心成型を行なう。超
硬質合金の粉末量、及び成型回転数を適当に選択すれば
パイプ状の成型体が得られる。こうして得られた成型体
を焼結した場合、パイプの外周部は金型面に接触してい
るため、面粗度が良く、また変形も少なくラバープレ法
の欠点をカバー出来る。また、長さ方向の変形も、混合
粉末、スラリーまたは造粒粉末を使用し、高圧力で成型
しているため、加熱またはスラリーを使用する比較的低
圧力の射出成型法・押出し成型法の様に、長時間の脱脂
等の操作を含まないため、少なく有利である。さらに工
程が簡略化出来、能率化が計れる事も有利である。以下
、本発明を具体的に説明する。This pipe is put into a centrifugal molding machine and centrifugal molding is performed. A pipe-shaped molded body can be obtained by appropriately selecting the amount of cemented carbide powder and the molding rotation speed. When the molded body thus obtained is sintered, the outer circumference of the pipe is in contact with the mold surface, so the surface roughness is good and deformation is small, which can overcome the drawbacks of the rubber pre method. In addition, deformation in the length direction is also possible because mixed powder, slurry, or granulated powder is used and molded under high pressure, so it is similar to relatively low-pressure injection molding / extrusion molding methods that use heat or slurry. Moreover, it is advantageous because it does not involve operations such as long degreasing. Furthermore, it is advantageous that the process can be simplified and efficiency can be improved. The present invention will be specifically explained below.
〔実施例〕
比較例のラバープレス法パイプ素材は中間に外周の研削
をしないと変形が大きく、また研削した場合、能率が問
題となるのに対し、本発明による素材は第１表から明か
らかなように研削なしでも変形が小さく、面粗度が良い
ため直接焼結し、素材として使用出来るため、能率も良
い。[Example] The rubber press method pipe material of the comparative example has large deformation unless the outer periphery is ground in the middle, and if it is ground, efficiency becomes a problem, whereas the material according to the present invention clearly has the following characteristics as shown in Table 1. Like Kana, the deformation is small even without grinding, and the surface roughness is good, so it can be directly sintered and used as a raw material, making it highly efficient.
上述のように、本発明超硬質合金の製造法は、遠心成型
の特徴である高圧力、量産性を生かし、粉末の成型法と
して応用し、寸法精度の良い素材の製法として有効なも
のである。As mentioned above, the method for manufacturing the cemented carbide of the present invention takes advantage of the high pressure and mass production characteristics of centrifugal molding, and can be applied as a powder molding method, making it effective as a method for manufacturing materials with good dimensional accuracy. .
Claims (1)
化物の一種以上とＦｅ、Ｎｉ、Ｃｏ、Ｗ、Ｍｏ、Ｃｒの
一種以上とよりなる超硬質合金において、遠心成型をす
ることを特徴とする超硬質合金工具の製造法。Centrifugal forming of a superhard alloy made of one or more carbides, nitrides, and carbonitrides of groups 4a, 5a, and 6a of the periodic table and one or more of Fe, Ni, Co, W, Mo, and Cr. A method for manufacturing a super hard alloy tool characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2897189A JPH02209404A (en) | 1989-02-08 | 1989-02-08 | Manufacture of super hard alloy tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2897189A JPH02209404A (en) | 1989-02-08 | 1989-02-08 | Manufacture of super hard alloy tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02209404A true JPH02209404A (en) | 1990-08-20 |
Family
ID=12263306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2897189A Pending JPH02209404A (en) | 1989-02-08 | 1989-02-08 | Manufacture of super hard alloy tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02209404A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928556A (en) * | 1982-07-28 | 1984-02-15 | リ−ド・ロツク・ビツト・カンパニ− | Composite metal member and manufacture |
| JPS61149402A (en) * | 1984-12-24 | 1986-07-08 | Kazunori Sato | Molding method of sintered member |
-
1989
- 1989-02-08 JP JP2897189A patent/JPH02209404A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928556A (en) * | 1982-07-28 | 1984-02-15 | リ−ド・ロツク・ビツト・カンパニ− | Composite metal member and manufacture |
| JPS61149402A (en) * | 1984-12-24 | 1986-07-08 | Kazunori Sato | Molding method of sintered member |
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