JPH0781215B2 - Ring for spinning machine - Google Patents
Ring for spinning machineInfo
- Publication number
- JPH0781215B2 JPH0781215B2 JP62139531A JP13953187A JPH0781215B2 JP H0781215 B2 JPH0781215 B2 JP H0781215B2 JP 62139531 A JP62139531 A JP 62139531A JP 13953187 A JP13953187 A JP 13953187A JP H0781215 B2 JPH0781215 B2 JP H0781215B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- spinning
- nitrogen
- surface layer
- present
- 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
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
- D01H7/52—Ring-and-traveller arrangements
- D01H7/60—Rings or travellers; Manufacture thereof not otherwise provided for ; Cleaning means for rings
- D01H7/602—Rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、高速精紡における寿命の長い紡機用リングに
関するものである。TECHNICAL FIELD The present invention relates to a ring for a spinning machine having a long life in high-speed spinning.
従来の紡機用リングは表面の硬化処理として一般に低炭
素鋼に浸炭を行ない表面炭素含有量を0.8％程度にして
焼き入れられたものが使用されている。しかし、今日の
紡績工場での過酷な操業条件の下では、トラベラに対す
る耐摩耗性が不足し寿命の点で不充分であった。また一
部窒化処理により表面硬度を上げたものも使用されてい
るが、硬化層の靭性が低く、やはり寿命の点で不充分な
点があった。As a conventional spinning ring, a carburized low carbon steel is generally used as a surface hardening treatment and is hardened to a surface carbon content of about 0.8%. However, under severe operating conditions in today's spinning factories, the wear resistance to the traveler is insufficient and the life is insufficient. In addition, although a material whose surface hardness has been partially increased by nitriding is also used, the toughness of the hardened layer is low, and there is still an insufficient point in terms of life.
本発明は上記問題点を解消せんとするものであり、Ｃを
0.6〜1.1％、Crを0.9〜1.6％含有する鋼よりなるリング
に、浸窒、焼入れ、焼戻し処理を行い、表層に深さ0.1m
m以内で窒素含有量0.15〜1.0％の層を設けると共に、母
材は球状化した炭化物が分散したマルテンサイト組織よ
りなる紡機用リングを提供するものである。The present invention is intended to solve the above problems, and
A ring made of steel containing 0.6 to 1.1% and 0.9 to 1.6% Cr is subjected to nitriding, quenching, and tempering, and the depth of the surface is 0.1 m.
A layer having a nitrogen content of 0.15 to 1.0% within m is provided, and a base material provides a spinning ring having a martensite structure in which spheroidized carbide is dispersed.
ところで、表層と固溶する窒素は0.15％〜1.0％が望ま
しく、0.15％未満であると窒素の効果が発揮されず、1.
0％を越えるともろい窒素化合物を作り易くなり耐摩性
が悪化する。また素材に含まれるＣ量は0.6〜1.1％、Cr
量は0.9〜1.6％の範囲にあることが望ましく下限未満で
あると耐摩性向上に有効となる炭化物が少なくなり、上
限を越えると加工性が悪くなる。By the way, it is desirable that 0.15% to 1.0% of nitrogen be solid-dissolved with the surface layer, and if it is less than 0.15%, the effect of nitrogen will not be exhibited, and 1.
If it exceeds 0%, it becomes easy to form a brittle nitrogen compound and the wear resistance deteriorates. The amount of C contained in the material is 0.6-1.1%, Cr
The amount is preferably in the range of 0.9 to 1.6%, and if it is less than the lower limit, the amount of carbide that is effective in improving the wear resistance decreases, and if it exceeds the upper limit, the workability deteriorates.
表層に固溶した窒素はMs点を下げ、焼入れ時に芯部より
も後にマルテンサイト化させ、表層に圧縮残留応力を残
すと共に残留オーステナイトも生成し、疲労強度を向上
させる。また窒素は焼戻し軟化抵抗を高め、過酷な運転
条件での熱による軟化に対して効果がある他、耐焼き付
き性も改善し、リングとトラベラのなじみが良くなり、
糸切れ減少の効果もある。またマルテンサイト中に分散
した炭化物はトラベラ走行時、リングの表面で有効に働
いて減摩特性を発揮する。Nitrogen that forms a solid solution in the surface layer lowers the Ms point and martensites after the core during quenching, leaving compressive residual stress in the surface layer and generating retained austenite, which improves fatigue strength. Nitrogen also increases the resistance to temper softening, is effective against softening due to heat under harsh operating conditions, improves seizure resistance, and improves the familiarity of the ring and traveler.
It also has the effect of reducing thread breakage. Further, the carbide dispersed in the martensite works effectively on the surface of the ring during traveling of the traveler to exert the anti-friction property.
以下、本発明の実施例を説明するが、本発明はこの実施
例に限定されるものではない。Examples of the present invention will be described below, but the present invention is not limited to these examples.
Ｃを1.0％、Crを1.3％含んだ軸受鋼を球状化焼鈍した
後、所定のリング形状に旋削し、所要の熱処理条件に
て、窒素拡散雰囲気中にて焼入れ、焼戻して、第１図に
示すように、母材は炭化物１を分散したマルテンサイト
組織２で形成され、表層３は上記マルテンサイト組織に
窒素が固溶し、残留オーステナイト４を多く含んだ層を
形成して本発明の紡機用リングを構成する。Bearing steel containing 1.0% of C and 1.3% of Cr was spheroidized and annealed, then turned into a predetermined ring shape, and quenched and tempered in a nitrogen diffusion atmosphere under the required heat treatment conditions. As shown, the base material is formed of a martensite structure 2 in which a carbide 1 is dispersed, and a surface layer 3 forms a layer in which nitrogen is solid-dissolved in the martensite structure and contains a large amount of retained austenite 4, thereby forming the spinning machine of the present invention. Make up a ring for use.
ところで、上記熱処理は第３図に示す条件にて行う。即
ち、窒素拡散雰囲気中での焼入れは、焼入れ均熱保持
（850℃×25分）中にRXガス雰囲気とし、NH3ガスを５％
添加して表層に窒素を拡散させた後、焼戻し（180℃×6
0分）を行ったものである。By the way, the heat treatment is performed under the conditions shown in FIG. That is, in the quenching in the nitrogen diffusion atmosphere, the RX gas atmosphere is kept while maintaining the quenching uniform temperature (850 ° C x 25 minutes) and the NH 3 gas is 5%.
After adding and diffusing nitrogen to the surface layer, tempering (180 ℃ × 6
0 minutes).
このとき、上記表層の窒素含有量は、第２図の窒素濃度
曲線図に示すように表面より0.1mm以内で0.2〜0.4％と
なっており、それより内部では窒素の含有量が減少して
いる。At this time, the nitrogen content of the surface layer is 0.2 to 0.4% within 0.1 mm from the surface as shown in the nitrogen concentration curve diagram of FIG. There is.
なお、上記表層の窒素含有量は熱処理条件を変えること
により、0.15％〜1.0％になすことができる。The nitrogen content of the surface layer can be set to 0.15% to 1.0% by changing the heat treatment conditions.
次に、第４、第５図は本発明の紡機用リングＡと従来の
窒素を添加していない紡機用リングＢとの比較を示し、
第４図はリング表面からの残留応力変化曲線図であり、
本発明の紡機用リングＡの表層は、従来の窒素を添加し
ていない紡機用リングＢとくらべると圧縮応力となって
いることがわかる。Next, FIGS. 4 and 5 show a comparison between the spinning ring A of the present invention and the conventional spinning ring B having no nitrogen added,
FIG. 4 is a residual stress change curve diagram from the ring surface,
It can be seen that the surface layer of the spinning ring A of the present invention has a compressive stress as compared with the conventional spinning ring B to which nitrogen is not added.
また、第５図は残留オーステナイト量を示す曲線図であ
り、本発明の紡機用リングＡ、従来の紡機用リングＢに
比べ、窒素拡散層を含む表層の残留オーステナイト量が
多くなっていることがわかる。FIG. 5 is a curve diagram showing the amount of retained austenite. Compared to the spinning ring A of the present invention and the conventional spinning ring B, the retained austenite amount of the surface layer including the nitrogen diffusion layer is large. Recognize.
次に、本発明の紡機用リングＡと従来の紡機用リングＢ
とを用いて、下記条件にて摩耗テスト及び糸切れテスト
を行なった。Next, the spinning ring A of the present invention and the conventional spinning ring B
Abrasion test and yarn breakage test were performed under the following conditions using and.
テスト条件 リング寸法:3.2F×φ47×φ57.5 スピンドル回転数:14500r.p.m 紡出糸：レーヨン30′Ｓ トラベラ:MS/hf NO.2 第６図は運転時間とリングの摩耗量の関係を示す曲線図
であり、従来の紡機用リングＢに比較し、本発明の紡機
用リングＡは摩耗が少なく、寿命が長いことがわかる。Test conditions Ring size: 3.2F × φ47 × φ57.5 Spindle speed: 14500r.pm Spinning yarn: Rayon 30 ′ S Traveler: MS / hf NO.2 Figure 6 shows the relationship between operating time and ring wear. It is a curve figure shown, and it can be seen that the ring A for a spinning machine of the present invention has less wear and has a longer life than the ring B for a conventional spinning machine.
第７図は運転時間と糸切れ数の関係を示す曲線図であ
り、本発明の紡機用リングＡは従来の紡機用リングＢに
比較し、初期より糸切れが少なく、紡調の点でも優れた
効果を有する。FIG. 7 is a curve diagram showing the relationship between the operating time and the number of yarn breakages. The spinning ring A of the present invention has less yarn breakage than the initial spinning ring B and is excellent in the spinning condition. Have an effect.
本発明は上記構成よりなり、表層に窒素が固溶し、かつ
球状化した炭化物が分散したマルテンサイト層が形成さ
れているため、表層に圧縮応力が生じ、また残留オース
テナイトが生成し、耐疲労性を向上し、熱軟化抵抗も向
上する。The present invention is composed of the above, nitrogen is a solid solution in the surface layer, and since a martensite layer in which spheroidized carbide is dispersed is formed, compressive stress occurs in the surface layer, and residual austenite is generated, fatigue resistance And the softening resistance is also improved.
さらに、上記炭化物は耐摩耗性も向上し、上記の複合作
用により、リングの耐摩耗性が向上し、寿命を延長させ
る効果が発揮されると共に、トラベラの焼き付きが少な
く、紡調が優れる等の優れた効果を有する発明である。Further, the carbide also improves the wear resistance, the combined action described above, the wear resistance of the ring is improved, the effect of extending the life is exhibited, the seizure of the traveler is small, the spinning is excellent, etc. It is an invention having excellent effects.
第１図は本発明の紡機用リングの一実施例を示す表面拡
大断面図、第２図は同窒素濃度曲線図、第３図は同熱処
理条件図、第４図〜第７図は本発明の紡機用リングと従
来の紡機用リングの比較を示し、第４図は残留応力変化
図、第５図は残留オーステナイト量変化図、第６図は運
転時間−摩耗量曲線図、第７図は運転時間−糸切れ曲線
図である。 １……炭化物 ２……マルテンサイト組織 ３……表層 ４……残留オーステナイトFIG. 1 is an enlarged cross-sectional view showing an embodiment of the spinning ring of the present invention, FIG. 2 is the same nitrogen concentration curve diagram, FIG. 3 is the same heat treatment condition diagram, and FIGS. Fig. 4 shows a comparison between the spinning ring and the conventional spinning ring. Fig. 4 is a residual stress change diagram, Fig. 5 is a retained austenite amount change diagram, Fig. 6 is an operating time-wear amount curve diagram, and Fig. 7 is It is an operating time-thread breakage curve figure. 1 ... Carbide 2 ... Martensite structure 3 ... Surface layer 4 ... Retained austenite
Claims (1)
鋼よりなるリングに、浸窒、焼入れ、焼戻し処理を行
い、表層に深さ0.1mm以内で窒素含有量0.15〜1.0％の層
を設けると共に、母材は球状化した炭化物が分散したマ
ルテンサイト組織よりなることを特徴とする紡機用リン
グ。1. A ring made of steel containing 0.6 to 1.1% of C and 0.9 to 1.6% of Cr is subjected to nitriding, quenching, and tempering treatments, and the surface layer has a nitrogen content of 0.15 to 1.0 within a depth of 0.1 mm. % Layer, and the base material has a martensite structure in which spheroidized carbides are dispersed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62139531A JPH0781215B2 (en) | 1987-06-02 | 1987-06-02 | Ring for spinning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62139531A JPH0781215B2 (en) | 1987-06-02 | 1987-06-02 | Ring for spinning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63303132A JPS63303132A (en) | 1988-12-09 |
| JPH0781215B2 true JPH0781215B2 (en) | 1995-08-30 |
Family
ID=15247448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62139531A Expired - Lifetime JPH0781215B2 (en) | 1987-06-02 | 1987-06-02 | Ring for spinning machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0781215B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299122A (en) * | 2008-06-12 | 2009-12-24 | Toyota Motor Corp | Nitriding-quenching method, heater for nitriding-quenching and nitriding-quenching apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604901B2 (en) * | 1978-09-14 | 1985-02-07 | 日本スピンドル製造株式会社 | spinning ring |
| JPS6059328B2 (en) * | 1981-04-02 | 1985-12-24 | 金井 宏之 | ring for spinning machine |
| JPS5943128A (en) * | 1982-09-01 | 1984-03-10 | Kanai Hiroyuki | Traveller for spinning machine |
| JPS59125916A (en) * | 1982-12-28 | 1984-07-20 | Kanai Hiroyuki | Ring for spinning machinery |
-
1987
- 1987-06-02 JP JP62139531A patent/JPH0781215B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63303132A (en) | 1988-12-09 |
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