JPH0722821B2 - Brazing method - Google Patents
Brazing methodInfo
- Publication number
- JPH0722821B2 JPH0722821B2 JP32903489A JP32903489A JPH0722821B2 JP H0722821 B2 JPH0722821 B2 JP H0722821B2 JP 32903489 A JP32903489 A JP 32903489A JP 32903489 A JP32903489 A JP 32903489A JP H0722821 B2 JPH0722821 B2 JP H0722821B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- wire
- brazing material
- chromium carbide
- carbide layer
- 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 - Lifetime
Links
Landscapes
- Impact Printers (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、表面にクロム炭化物層を有する鉄鋼部材を
被ロウ付け材にロウ付けする方法に関する。TECHNICAL FIELD The present invention relates to a method for brazing a steel member having a chromium carbide layer on its surface to a brazing material.
［従来の技術］ 従来より、高速駆動されるワイヤドットプリンタにおい
て、その印字ヘッドの印字ワイヤには、耐摩耗性の良い
超硬合金が使用され、印字ワイヤはアマチュアレバーに
ロウ付けにより一体結合されている。[Prior Art] Conventionally, in a wire dot printer driven at high speed, the print wire of the print head is made of a hard metal having good wear resistance, and the print wire is integrally joined to the armature lever by brazing. ing.
しかし、超硬合金の細い印字ワイヤはコストが高くつ
き、またワイヤの硬度は高いものの、靭性に欠けるた
め、折れやすいという欠点がある。However, a fine printing wire made of cemented carbide is expensive, and although the wire has high hardness, it has a drawback that it is fragile because it lacks in toughness.
そこで、ピアノ線などの炭素鋼からなる印字ワイヤを用
い、それに表面硬化処理を施して表面層に耐摩耗性に優
れたクロム炭化物を生成させることにより、低コストで
耐摩耗性，靭性を得ることが試みられている。Therefore, it is possible to obtain wear resistance and toughness at low cost by using a printing wire made of carbon steel such as a piano wire and subjecting it to a surface hardening treatment to generate chromium carbide with excellent wear resistance in the surface layer. Is being attempted.
［解決しようとする課題］ しかしながら、表面にクロム炭化物層が介在すると、ロ
ウの濡れ性が低くなり、十分な接合強度が得られないと
いう問題点があった。[Problems to be Solved] However, when the chromium carbide layer is present on the surface, there is a problem that the wettability of the solder is lowered and sufficient bonding strength cannot be obtained.
そこで本発明の目的は、表面にクロム炭化物層を有する
鉄鋼部材を被ロウ付け材にロウ付けする際に、十分なる
接合強度が得られるロウ付け方法を提供することにあ
る。Therefore, an object of the present invention is to provide a brazing method capable of obtaining sufficient bonding strength when brazing a steel member having a chromium carbide layer on its surface to a brazing material.
［課題を解決するための手段］ 上記目的を達成するために、本発明の方法は、1wt％〜7
wt％のケイ素を添加したロウ材を用いて、表面にクロム
炭化物層を有する鉄鋼部材を被ロウ付け材にロウ付けす
ることを特徴とする。[Means for Solving the Problems] In order to achieve the above object, the method of the present invention comprises 1 wt% to 7% by weight.
A steel material having a chromium carbide layer on the surface thereof is brazed to a material to be brazed by using a brazing material to which wt% of silicon is added.
［実施例］ 以下、本発明の実施例を詳細に説明する。[Examples] Examples of the present invention will be described in detail below.
第１図，第２図示のように、本例は印字ワイヤ１をアマ
チュアレバー２にロウ接合するものである。As shown in FIGS. 1 and 2, in this embodiment, the print wire 1 is brazed to the armature lever 2.
印字ワイヤ１は表面にクロム炭化物層1aが被覆・形成し
てある高炭素鋼のワイヤで、0.3mmの径を有している。
アマチュアレバー２にはマルエージ鋼を用いている。ロ
ウ材３として本実施例では、銀ロウ（BAg24,Ag:Cu:Zn:N
i＝50:20:28:2）に3wt％のケイ素（Si）を添加したもの
を用いている。The printing wire 1 is a wire of high carbon steel having a surface coated with a chromium carbide layer 1a, and has a diameter of 0.3 mm.
The armature lever 2 is made of maraging steel. In this embodiment, as the brazing material 3, silver brazing (BAg24, Ag: Cu: Zn: N) is used.
i = 50: 20: 28: 2) with 3 wt% of silicon (Si) added.
本実施例のロウ付けを行うに際しては、互いの接合面に
ケイ素が添加されたロウ材３を塗って印字ワイヤ１とア
マチュアレバー２とを対向させ、接合部を高周波加熱す
る。するとロウ材３が溶けて接合面を濡らし、接合部が
冷えると、ロウ材３が接合面部で固まって、印字ワイヤ
１とアマチュアレバー２とのロウ付けが完了する。When the brazing of this embodiment is performed, a brazing material 3 containing silicon is applied to the joining surfaces of the joining wires, the printing wire 1 and the armature lever 2 are opposed to each other, and the joining portion is heated at a high frequency. Then, the brazing material 3 melts and wets the joint surface, and when the joint portion cools, the brazing material 3 is solidified at the joint surface portion, and brazing of the print wire 1 and the armature lever 2 is completed.
以下にロウ材とワイヤの材質による接合強度の比較表を
示す。The following is a comparison table of the bonding strength between the brazing material and the wire material.
アマチュアレバー２にはいずれもマルエージ鋼を用いて
いる。印字ワイヤ１を表面にクロム炭化物層が形成して
ある高炭素鋼（部材Ｓとする）とした場合に、銀ロウに
3wt％のケイ素を添加したものでロウ付けした場合（種
類）は、銀ロウのみでロウ付けした場合（種類）に
比し、抗折力は約2.3倍、剪断強度は約1.6倍に向上し、
印字ワイヤに表面処理を行わないハイスを用いた場合
（種類）の接合強度にほぼ匹敵する接合強度が得られ
た。 The armature lever 2 is made of maraging steel. When the printing wire 1 is made of high-carbon steel having a chromium carbide layer formed on its surface (referred to as a member S), it becomes a silver solder.
When brazing with 3 wt% silicon added (kind), the transverse rupture strength is about 2.3 times and the shear strength is about 1.6 times higher than when brazing only with silver brazing (kind). ,
Bonding strength almost equal to the bonding strength of the case (type) when HSS without surface treatment was used for the printing wire was obtained.
ロウ材に添加するケイ素の割合については、混合比率を
種々変えて実験を行ったが、1wt％〜7wt％のケイ素を添
加した場合に、接合強度の向上が見られ、3wt％で最も
向上が顕著であった。Regarding the ratio of silicon added to the brazing material, experiments were conducted with various mixing ratios, but when 1 wt% to 7 wt% silicon was added, the bonding strength was improved, and 3 wt% showed the greatest improvement. It was remarkable.
［効果］ 上に説明したように、1wt％〜7wt％のケイ素を添加した
ロウ材を用いる本発明の方法によると、表面にクロム炭
化物層を有する鉄鋼部材を被ロウ付け材にロウ付けする
際のロウ付け部の接合強度を向上させることができる。
表面にクロム炭化物層を有する鉄鋼部材を強固にロウ付
けできるので、耐摩耗性と靭性とを共に有し、かつ高速
駆動にも耐える印字ヘッドを低コストで提供することが
可能である。[Effect] As described above, according to the method of the present invention using the brazing material added with 1 wt% to 7 wt% of silicon, when the steel member having the chromium carbide layer on the surface is brazed to the brazing material. It is possible to improve the bonding strength of the brazed part.
Since the steel member having the chromium carbide layer on the surface can be firmly brazed, it is possible to provide a print head having both wear resistance and toughness and capable of withstanding high speed driving at low cost.
図面は本発明の一実施例を示すもので、第１図は接合部
の断面図、第２図は接合部の正面図である。 １……鉄鋼部材、 1a……クロム炭化物層、 ２……被ロウ付け材、 ３……ケイ素を添加したロウ材。The drawings show an embodiment of the present invention. FIG. 1 is a cross-sectional view of a joint portion, and FIG. 2 is a front view of the joint portion. 1 ... Steel member, 1a ... Chromium carbide layer, 2 ... Brazed material, 3 ... Silicon-added brazing material.
Claims (1)
用いて、表面にクロム炭化物層を有する鉄鋼部材を被ロ
ウ付け材にロウ付けすることを特徴とするロウ付け方
法。1. A brazing method comprising brazing a steel member having a chromium carbide layer on the surface thereof to a brazing material using a brazing material containing 1 wt% to 7 wt% of silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32903489A JPH0722821B2 (en) | 1989-12-19 | 1989-12-19 | Brazing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32903489A JPH0722821B2 (en) | 1989-12-19 | 1989-12-19 | Brazing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03189074A JPH03189074A (en) | 1991-08-19 |
| JPH0722821B2 true JPH0722821B2 (en) | 1995-03-15 |
Family
ID=18216860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32903489A Expired - Lifetime JPH0722821B2 (en) | 1989-12-19 | 1989-12-19 | Brazing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722821B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07115162B2 (en) * | 1991-12-27 | 1995-12-13 | 株式会社精工舎 | Brazing structure of metal parts and brazing method thereof |
| DE19940115A1 (en) * | 1999-08-24 | 2001-03-01 | Degussa | Cadmium-free brazing alloys |
-
1989
- 1989-12-19 JP JP32903489A patent/JPH0722821B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03189074A (en) | 1991-08-19 |
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