JPH0781215B2 - Ring for spinning machine - Google Patents

Ring for spinning machine

Info

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
Application number
JP62139531A
Other languages
Japanese (ja)
Other versions
JPS63303132A (en
Inventor
明 丸田
Original Assignee
金井 宏之
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 金井 宏之 filed Critical 金井 宏之
Priority to JP62139531A priority Critical patent/JPH0781215B2/en
Publication of JPS63303132A publication Critical patent/JPS63303132A/en
Publication of JPH0781215B2 publication Critical patent/JPH0781215B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H7/00Spinning or twisting arrangements
    • D01H7/02Spinning or twisting arrangements for imparting permanent twist
    • D01H7/52Ring-and-traveller arrangements
    • D01H7/60Rings or travellers; Manufacture thereof not otherwise provided for ; Cleaning means for rings
    • D01H7/602Rings

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.

〔従来の技術及びその問題点〕[Conventional technology and its problems]

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.

〔問題点を解決するための手段〕[Means for solving problems]

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.

〔作用〕[Action]

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.

〔実施例〕〔Example〕

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′ 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.

〔発明の効果〕〔The invention's 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.

【図面の簡単な説明】[Brief description of drawings]

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)

【特許請求の範囲】[Claims] 【請求項1】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0.1mm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.
JP62139531A 1987-06-02 1987-06-02 Ring for spinning machine Expired - Lifetime JPH0781215B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS63303132A (en) 1988-12-09

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