JPS60221166A - Production of wear-resistant composite material - Google Patents
Production of wear-resistant composite materialInfo
- Publication number
- JPS60221166A JPS60221166A JP7489784A JP7489784A JPS60221166A JP S60221166 A JPS60221166 A JP S60221166A JP 7489784 A JP7489784 A JP 7489784A JP 7489784 A JP7489784 A JP 7489784A JP S60221166 A JPS60221166 A JP S60221166A
- Authority
- JP
- Japan
- Prior art keywords
- casting
- wear
- hard
- hard material
- wear resistance
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は土木機械用のリッパ−先端、パケット歯及び切
断端縁の如き土に関係する工具類に用いられる耐摩耗性
複合材料の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a wear-resistant composite material for use in earth-related tools such as ripper tips, packet teeth and cutting edges for earth-moving machinery. It is.
従来技術
従来、タングステンカーバイドなどの硬質材料を利用し
た鋳造による耐摩耗複合材料の製造方法は、鋳型内に硬
質材料をあらかじめ配置しておき溶湯を注入する方法で
あった。この方法では鋳型内での硬質材料を加熱するこ
とが困雌であシ、溶湯が硬質材料との接触部分で冷却し
凝固するため、十分に硬質材料を母材に鋳ぐるむことが
困離であった。また耐摩耗性と高靭性をねらうため、母
材には、炭素含有量の少ない鋳鋼が多く使用された。BACKGROUND ART Conventionally, a method for manufacturing a wear-resistant composite material by casting using a hard material such as tungsten carbide was a method in which the hard material was placed in a mold in advance and molten metal was poured into the mold. In this method, it is difficult to heat the hard material in the mold, and the molten metal cools and solidifies at the part where it comes into contact with the hard material, making it difficult to fully cast the hard material into the base metal. Met. In addition, in order to achieve wear resistance and high toughness, cast steel with a low carbon content was often used as the base material.
このため、仮に、硬質材料（特に炭化物系など）がうま
く鋳ぐるんでも、母材内に硬質材料が溶けこみ十分な耐
摩耗性が得られない問題があった。また、あらかじめ配
置した硬質材料も注湯の際に移動しやすく、耐摩耗性の
必要な部位に硬質材料を配置できない問題点があった。For this reason, even if a hard material (especially a carbide type material) is successfully cast, there is a problem in that the hard material melts into the base material and sufficient wear resistance cannot be obtained. Furthermore, the hard material placed in advance tends to move during pouring, and there is a problem in that the hard material cannot be placed in areas where wear resistance is required.
また、炭化物などの硬質材料は、この単体あるいは金属
基地中に分散した形で耐摩耗材料として使われている。Further, hard materials such as carbides are used as wear-resistant materials either alone or in the form of being dispersed in a metal matrix.
これらの合金は、従来はほとんど粉末冶金的に製造され
ており、コ不トが非常に高いうえに製品形状および寸法
に大きな制約がある。Conventionally, most of these alloys have been produced by powder metallurgy, which has a very high core and has large restrictions on product shape and dimensions.
この様な状況から、従来より炭化物の分散した複合材料
を鋳造法によって製造することが試みられている。Under these circumstances, attempts have been made to manufacture composite materials in which carbides are dispersed by a casting method.
従来の方法は、Ｆａ、Ｎｉ、α溶湯中へＦＣ等の炭化物
を混合して製造する方法で、この方法では、炭化物が溶
湯に相当量溶解するため、炭化物の歩留シが悪い上に、
溶湯組成も変化して脆くなるなどの問題があった。さら
に炭化物の分散も十分なものが得られないことも問題で
あった。The conventional method is to mix carbides such as FC into molten metal of Fa, Ni, and α.In this method, a considerable amount of carbide is dissolved in the molten metal, so the yield of carbide is poor, and
There were problems such as the molten metal composition changing and becoming brittle. Another problem was that sufficient dispersion of carbides could not be obtained.
種々の種類の土木機械用のリッパ−先端、パケット歯及
び切断端縁の如き土に関係する工具類は岩石、砂および
土に対すこれらの部分は、連続的な激しい摩耗を受け、
また衝撃も大きい。Earth-related tools such as ripper tips, packet teeth and cutting edges for various types of earth-moving machines are exposed to rock, sand and soil, and these parts are subject to continuous severe wear and tear.
It was also a big shock.
このような使用条件に対し、これまで多くの耐摩耗合金
が開発された。また炭化物を鋳造時に投入して複合化す
る方法も試みられているが、前述の問題点（炭化物の溶
解、不良分散）のため、十分な効果が得られていない。Many wear-resistant alloys have been developed to meet such usage conditions. A method has also been attempted in which carbide is added during casting to form a composite, but sufficient effects have not been obtained due to the aforementioned problems (dissolution of carbide, poor dispersion).
発明の目的
本発明の目的は、硬質材料４の歩留りも良好になり、ま
た基地２の溶湯組成も変化せずもろくなるなどの問題が
なくなるし、また硬質材料４の分散も良好にできて耐摩
耗性の高い複合材料の製造が可能な耐摩耗性複合材料の
製造方法を提供することである。OBJECTS OF THE INVENTION The objects of the present invention are to improve the yield of the hard material 4, to eliminate problems such as brittleness because the molten metal composition of the base 2 does not change, and to improve the dispersion of the hard material 4 so that it is durable. It is an object of the present invention to provide a method for manufacturing a wear-resistant composite material that can produce a composite material with high wear resistance.
発明の構成
本発明は、硬質材料４を低融点材料５によシ鋳ぐるみし
てブリック状の鋳ぐるみ材Ａを作成し、これら鋳ぐるみ
材Ａを鋳型に配置した後基地２になる高融点材料を注湯
して基地２に鋳ぐるみ材Ａを埋設させるようにしたもの
である。Structure of the Invention The present invention involves casting a hard material 4 with a low-melting point material 5 to create a brick-shaped casting material A, and placing the casting material A in a mold. The casting material A is buried in the base 2 by pouring the material.
実施例 以下、本発明の実施例を図面を参照して説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
図面中１はパケット歯体であり、パケット歯体１は鋳鋼
のような高靭性材料の基地２に耐摩耗複合材より成るプ
レツク３を埋設して構成しである。In the drawings, reference numeral 1 denotes a packet tooth body, and the packet tooth body 1 is constructed by embedding a plaque 3 made of a wear-resistant composite material in a base 2 of a high-toughness material such as cast steel.
このプレツク３は炭化物などの硬質材料４をねずみ鋳鉄
などの低融点材料５によシ鋳ぐるみして成形しである。This block 3 is formed by casting a hard material 4 such as carbide into a low melting point material 5 such as gray cast iron.
したがって、上記のようなパケット歯体１のような部品
を製造する場合は、タングステンカーバイドのような炭
化物などの硬質材料４をねずみ鋳鉄などの低融点材料５
により鋳ぐるみしてブロック３である鋳ぐるみ材Ａを作
り、これら鋳ぐるみ材Ａを耐摩耗性を必要とする部分の
鋳型に配置し、鋳鋼のような高靭性材料の溶湯により鋳
ぐるむことによシ製造される。Therefore, when manufacturing a part such as the packet tooth body 1 as described above, a hard material 4 such as a carbide such as tungsten carbide is replaced with a low melting point material 5 such as gray cast iron.
The cast material A, which is the block 3, is made by casting, and the cast material A is placed in a mold for the part that requires wear resistance, and then cast with molten metal of a high toughness material such as cast steel. Manufactured by.
鋳ぐるみ材Ａにおいて硬質材料４を低融点材料５で鋳ぐ
るみする温度は１４ｏｏｏＣ〜１５ｏｏ０ｃである。In the casting material A, the temperature at which the hard material 4 is cast with the low melting point material 5 is 14oooC to 15oooC.
第４図に鋳ぐるみ材Ａの金属組成の写真を示す。第５図
はこの写真の説明図である。Figure 4 shows a photograph of the metal composition of casting material A. FIG. 5 is an explanatory diagram of this photograph.
発明の効果
本発明は上記のように、硬質材料４を低融点材料５によ
シ鋳ぐるみしてプ四ツク状の鋳ぐるみ材Ａを作成し、こ
れら鋳ぐるみ材Ａを鋳型に配置した後基地２になる高融
点材料を注湯して基地２に鋳ぐるみ材Ａを埋設させるよ
うにして成る耐摩耗性複合材料の製造法である。Effects of the Invention As described above, the present invention involves casting a hard material 4 with a low melting point material 5 to create a four-piece shaped casting material A, and after placing the casting material A in a mold. This is a method for producing a wear-resistant composite material, in which a high melting point material that will become the base 2 is poured and a casting material A is buried in the base 2.
したがって、硬質材料４は低融点材料５により鋳ぐるみ
されているので基地２内に硬質材料４が溶出することが
なくなる。このために硬質材料４０歩留りも良好になり
、また基地２の溶湯組成も変化せずもろくなるなどの問
題がなくなるし、また硬質材料４の分散も良好にできて
耐摩耗性の高い複合材料を製造することができる。Therefore, since the hard material 4 is surrounded by the low melting point material 5, the hard material 4 will not be eluted into the base 2. As a result, the yield of the hard material 40 is improved, the composition of the molten metal in the base 2 does not change and problems such as brittleness are eliminated, and the dispersion of the hard material 4 is also improved, making it possible to produce composite materials with high wear resistance. can be manufactured.
第１図は本発明に係る製造方法で製造された耐摩耗性複
合材料から成るパケット歯体の平面図、第２図は第１図
■方向からの矢視図、第３図は鋳ぐるみ材の説明図、第
４図は鋳ぐるみ材の金属組織の顕微鏡写真図、第５図は
同説明図である。
出願人 株式会社小松製作所
代理人 弁理上米 原 正 章
弁理士浜 本 忠
第１図
ず
■
第２図
第３図
第４図
第５図Fig. 1 is a plan view of a packet gear made of a wear-resistant composite material manufactured by the manufacturing method according to the present invention, Fig. 2 is a view taken from the arrow direction in Fig. 1, and Fig. 3 is a cast material. FIG. 4 is a microscopic photograph of the metal structure of the casting material, and FIG. 5 is an explanatory diagram of the same. Applicant: Komatsu Ltd. Agent: Patent Attorney Masaaki Yonehara Patent Attorney: Tadashi Hamamoto 1. Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
状の鋳ぐるみ材Ａを作成し、これら鋳ぐるみ材Ａを鋳型
に配置した後、基地２になる高融点材料を注湯して基地
２に鋳ぐるみ材Ａを埋設させるようにしたことを特徴と
する耐摩耗性複合材料の製造方法。A hard material 4 is cast with a low melting point material 5 to create a plastic casting material A, and after these casting materials A are placed in a mold, a high melting point material that will become the base 2 is poured. A method for manufacturing a wear-resistant composite material, characterized in that a casting material A is buried in a base 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7489784A JPS60221166A (en) | 1984-04-16 | 1984-04-16 | Production of wear-resistant composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7489784A JPS60221166A (en) | 1984-04-16 | 1984-04-16 | Production of wear-resistant composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60221166A true JPS60221166A (en) | 1985-11-05 |
Family
ID=13560638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7489784A Pending JPS60221166A (en) | 1984-04-16 | 1984-04-16 | Production of wear-resistant composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60221166A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63115666A (en) * | 1986-10-31 | 1988-05-20 | Hino Motors Ltd | Internal chilling method for aluminum |
| JPS63313646A (en) * | 1987-03-13 | 1988-12-21 | サンドビック アクティエボラーグ | Cutting or abrasion-resistant part for cemented carbide |
| JPH0679434A (en) * | 1992-02-14 | 1994-03-22 | Masatoshi Yokoki | Wear resistant metal material and production thereof |
| WO1995031304A1 (en) * | 1994-05-13 | 1995-11-23 | Komatsu Ltd. | Method for casting wear resistant parts |
| JP2011513068A (en) * | 2008-03-06 | 2011-04-28 | カミート アーベー | Composite casting tool |
-
1984
- 1984-04-16 JP JP7489784A patent/JPS60221166A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63115666A (en) * | 1986-10-31 | 1988-05-20 | Hino Motors Ltd | Internal chilling method for aluminum |
| JPS63313646A (en) * | 1987-03-13 | 1988-12-21 | サンドビック アクティエボラーグ | Cutting or abrasion-resistant part for cemented carbide |
| JPH0679434A (en) * | 1992-02-14 | 1994-03-22 | Masatoshi Yokoki | Wear resistant metal material and production thereof |
| WO1995031304A1 (en) * | 1994-05-13 | 1995-11-23 | Komatsu Ltd. | Method for casting wear resistant parts |
| US5785109A (en) * | 1994-05-13 | 1998-07-28 | Komatsu Ltd. | Method for casting wear resistant parts |
| JP2011513068A (en) * | 2008-03-06 | 2011-04-28 | カミート アーベー | Composite casting tool |
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