JPS5858271A - Manufacture of parts for timepiece - Google Patents

Manufacture of parts for timepiece

Info

Publication number
JPS5858271A
JPS5858271A JP15696881A JP15696881A JPS5858271A JP S5858271 A JPS5858271 A JP S5858271A JP 15696881 A JP15696881 A JP 15696881A JP 15696881 A JP15696881 A JP 15696881A JP S5858271 A JPS5858271 A JP S5858271A
Authority
JP
Japan
Prior art keywords
parts
carbon steel
timepiece
tempering
free
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
Application number
JP15696881A
Other languages
Japanese (ja)
Inventor
Ryozo Shimoyama
下山 良造
Katsuyoshi Muraishi
村石 勝良
Shogo Maeda
正吾 前田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP15696881A priority Critical patent/JPS5858271A/en
Publication of JPS5858271A publication Critical patent/JPS5858271A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To obtain timepiece parts with superior toughness by working a free cutting carbon steel with a specified C content to the required shapes, carburizing or nitriding it, and carrying out hardening and tempering to regulate the hardness of the peripheries and that of the cores. CONSTITUTION:A free cutting carbon steel contg. 0.35-0.55% C is worked to the required shapes of timepiece parts and subjected to a heat treatment such as carburizing or nitriding. Hardening and tempering are then carried out to regulate the peripheries and cores of the parts to different hardness values. Thus, timepiece parts with improved wear and impact resistances and superior toughness are obtd. inexpensively.

Description

【発明の詳細な説明】 本発明は、重量比で0.35〜O,SS−の炭素(以下
〇−とする)を含む快削炭素鋼を用いて、歯車−軸傾、
ビン、ネジなどの時計部品を所要の形状に加工後表層部
上浸炭によシ被加工材炭素より%高炭素濃1[Kした後
、焼入、焼夏しによ)外局部と芯St異なる硬すに調質
し、耐摩耗性と耐曹撃性畔のJPl性を着じるしく改曽
し強靭性の優れた時計部品の製造方法に関するものであ
る。
Detailed Description of the Invention The present invention uses free-cutting carbon steel containing carbon of 0.35 to O, SS- (hereinafter referred to as 〇-) in terms of weight ratio.
After processing watch parts such as bottles and screws into the required shape, the surface layer is carburized to create a carbon concentration 1% higher than the carbon of the workpiece [after K, quenching, and baking] the outer part and core St. The present invention relates to a method for producing watch parts that are tempered to different hardnesses and have significantly improved wear resistance and JP1 properties, and are excellent in toughness.

従来時針部品用被加工材として用いられる快m炭素鋼は
公知のように1焼入tはじめとする熱処理作業等が容i
tことから主としてO9lsmQ、50〜1.0O11
iの範囲の快削鋼が用いられ、部品が極めて小さいこと
を利用し部品の外周部と芯部が同じ1ltK調質さnる
よう熱旭理會施している、LTht、l1G−0,60
〜1.0Of)快11%l炭111111では、複雑形
状部品の加工では被剛性が悪(旋削加工能率が悪いこと
や、超細物の軸傾では、所望の耐摩耗性を得ようとする
と、耐衝撃性が低下し折f′LIJI(なった)、逆に
耐衝撃性上重視すると耐摩耗性が低下するため構造上長
(の工夫を必要としている。iI−ジ類では破断強度を
一定に保つために厳しい熱処理管−理が必要にな〕、小
物で、−新強度の高いネジには、旋削性の悪い快削ステ
ンレス鋼を用いるなど経済的にも不利であゐとい一欠点
を有して−る。また形状の簡単な部品に僅かではあるが
04g0.15以下の快削低炭素鋼に浸炭れ理を行った
部品が弔いらnているが、強*を得るためには、浸炭探
すが要求されるため熱処理にシける寸法変化量と精度の
バラツキが大きい等いづれも多くの欠点を有している。
As is well known, carbon steel conventionally used as a workpiece material for hour hand parts can undergo heat treatment such as 1 quenching.
t, so mainly O9lsmQ, 50-1.0O11
Free-cutting steel in the i range is used, and taking advantage of the fact that the parts are extremely small, heat treatment is applied so that the outer periphery and core of the parts are tempered to the same 1ltK, LTht, l1G-0,60.
~1.0Of) Free 11% l charcoal 111111 has poor rigidity when machining complex-shaped parts (poor turning efficiency and axial inclination of ultra-thin materials make it difficult to obtain the desired wear resistance) On the other hand, if impact resistance is emphasized, abrasion resistance decreases, so it is necessary to improve the structural length. Strict heat treatment control is required to maintain a constant temperature, and the new high-strength screws are made of free-cutting stainless steel, which has poor machinability, making it economically disadvantageous. In addition, there are a small number of simple-shaped parts in which free-cutting low carbon steel of 04g0.15 or less is carburized, but in order to obtain strength Both methods have many drawbacks, such as large variations in dimensional change and accuracy due to heat treatment because carburization is required.

本発明の目的はこのような欠点を除去し被剛性の優nた
被加工材を用い部品の芯部を靭性等を主にした硬すに、
外周部は強度中針摩耗性を主にした硬fK調質すること
Kよシ今まで得られなかった、強度と耐摩耗性、耐衝撃
性等を兼ねそなえた時計部品を供給するものである。
The purpose of the present invention is to eliminate such drawbacks and to harden the core of the part with a focus on toughness by using a workpiece material with excellent rigidity.
The outer periphery is tempered with hard fK, mainly for strength and abrasion resistance.We supply watch parts that combine strength, abrasion resistance, impact resistance, etc., which has never been available before. .

すなわち本発明者等は、種々の実験を重ねた結果、被加
工材としては部品形状が小さく細くなるほど被加工材の
強度が必要で低炭素鋼(091m9.15以下)では素
材の冷間加工率を高めても強度が低(旋削加工Kかいて
部品精度が得に(いこと、高炭素になるほど被剛性が悪
いこと、熱処理調買上)で芯部と外周部の硬ずの差が!
イク四ピッ会−J硬t C以下!!Vとfる)fliマ
100〜SOOが機械的弛度等の緒特性が優れていゐこ
と、外周部の浸炭譲すは部品の1/!以下にすると熱め
型変形が少ないことを見出し本発明會完成させたもので
ある。
In other words, as a result of various experiments, the present inventors have found that the smaller and thinner the shape of the workpiece, the greater the strength of the workpiece, and that for low carbon steel (091m9.15 or less), the cold working rate of the material is lower. Even if the carbon is increased, the strength is low (turning machining increases the accuracy of the part (the higher the carbon, the worse the rigidity is, heat treatment), and the difference in hardness between the core and the outer periphery!
Iku 4-pic meeting - J hard t C or less! ! V and fru) fli machine 100~SOO has excellent mechanical properties such as mechanical sagness, and the carburization of the outer periphery is 1/1 of the parts! The present invention has been completed after discovering that the hot mold deformation is less when the following conditions are met.

以下本発明を実施例に基づ龜説明する。The present invention will be explained below based on examples.

Cチー0.48を含むp6系快削貴素鋼を用い第1図に
示す時計部品形状に加工後火に示す熱処理工程と条件で
試料を作製した。
A sample was prepared using P6 free-cutting noble steel containing a C-chie of 0.48 after being processed into the shape of a watch part shown in FIG. 1 and then subjected to the heat treatment process and conditions shown below.

1、浸炭処理 雰囲気  プロパン変成ガス 炭素濃度 05G=0.98〜1.00温度   85
0℃〜900℃ 保持時間 1.5時間〜2.Ow#間 2、情入処曹 雰囲気  夏、ガス 温度   840℃〜860C 保持時間 15分 冷却方法 油 3、焼戻し処理 雰囲気  M8ガス 温度   210℃〜300℃ 保持時間 15分 冷却方法 空冷 なお本発明との比較に用いた試料は、部品形状を同一と
し熱処理も従来から行なわれている方法にて作製した。
1. Carburizing atmosphere Propane converted gas carbon concentration 05G=0.98-1.00 Temperature 85
0°C to 900°C Holding time 1.5 hours to 2. Ow # 2, tender atmosphere Summer, gas temperature 840°C to 860°C Holding time 15 minutes Cooling method Oil 3, tempering atmosphere M8 gas temperature 210°C to 300°C Holding time 15 minutes Cooling method Air cooling The samples used for comparison had the same part shape and were heat treated using a conventional method.

第1表は従来方法と本発明法の比較を行うために時計部
品としての耐摩耗性と耐衝撃性試験1m施した結果を表
わしたものである。
Table 1 shows the results of a 1-meter abrasion resistance and impact resistance test for watch parts in order to compare the conventional method and the method of the present invention.

第 1 表 O非常に優nているmoflnている。Table 1 O very superior mofln.

Δやや悪い ×悪い 試料ノ硬すはマイタlビッカースで荷重3001で測定
した値である。耐摩耗性および耐衝撃性試験結果の判定
は、時計部品の軸傾(か−&> KII求さ3為輪列機
構の加速劣化試験、耐下僑撃試験、携帯試験等を行い総
合的に判定したものである従来から用いられているCチ
ー1.0の快削炭素鋼では、耐摩耗性と耐衝撃性のパッ
ンスのとれたH765G付近に調質した試料Bは双方の
特性とも充分ではな(、耐摩耗性を高めるためにNY7
50に調質した試料ムは耐衝撃試験で折nが生じた。ま
た試料aは耐衝撃試験で曲)が生じ耐摩耗試験では輪列
討入2年分で摩耗した。011客0.12の快削低炭素
鋼を用いた試料りは、耐摩耗性は非常に優れていたが、
芯部が軟かいためa)が生じた。
The hardness of the sample is a value measured with Mitar Vickers under a load of 3001. Wear resistance and impact resistance test results are judged comprehensively by conducting accelerated deterioration tests of the axial tilt of watch parts, KII demand 3 gear train mechanism acceleration deterioration tests, lower impact resistance tests, mobile phone tests, etc. Regarding the conventionally used free-cutting carbon steel with a C-chie of 1.0, sample B was tempered to around H765G, which has a good balance between wear resistance and impact resistance. (, NY7 to increase wear resistance)
The sample tempered to 50% cracked in the impact test. In addition, sample a showed bending in the impact resistance test and wear in the wear resistance test after two years of train training. The sample using free-cutting low carbon steel with a rating of 0.11 and 0.12 had very good wear resistance, but
A) occurred because the core was soft.

本発明の試料社、いづれも耐摩耗性、□耐衝撃性ともに
非常に優れ、7年間の携帯試験Kかいて亀摩耗、折れ、
−夛等はなかった。
All of the sample products of the present invention have excellent abrasion resistance and impact resistance.
-There were no troops.

第2図は本発明に用いた被加工材と焼戻し温度と硬すの
関係にりいて示したものであ為0本発明が前記重量比で
Cチを0.あ〜0.!5ISK@定した理由社、0.3
5チ未満では芯部の情入性が悪〈な〉強度が不足するこ
とと0.55%[−越えると外周部と芯iの硬すの差が
少なくな〕耐摩性を得ようとすると衝撃値が低下するた
めである。
Figure 2 shows the relationship between the workpiece used in the present invention, the tempering temperature, and the hardness. Ah~0. ! 5ISK @ Determined reason company, 0.3
If it is less than 5%, the toughness of the core will be poor and the strength will be insufficient, and if it exceeds 0.55%, the difference in hardness between the outer periphery and the core will be small. This is because the impact value decreases.

尚上記の実施例は本発明の一部をなすもので被加工材の
aSt用途に応じ選択し外周部の浸炭炭素繊度や深す、
および焼戻し硬を等tS々組合せる仁とにより、要求特
性の異なる、ネジ、歯車、バネ、軸傾などの時計部品に
対し同様表効果が得られることは容品に首肯できる。
The above embodiments form a part of the present invention, and are selected depending on the aSt application of the workpiece, and the fineness and depth of the carburized carbon of the outer periphery are changed.
It can be confirmed that the same surface effect can be obtained for watch parts such as screws, gears, springs, and shaft tilting, which have different required characteristics, by combining the same hardness and tempering hardness.

以上詳述した如く、本発明によれば被剛性の優rt、+
、被加工材を用い部品加工後、外周St浸炭し焼入、焼
戻しKよって外周部と芯部な異なる硬すに調質するとと
Kよ)非常に優れた強靭性を有する時計部品を、量童性
に富み安価に提供できる等、従来方法に比べ多くの利点
をもっている。
As described in detail above, according to the present invention, the stiffness is superior to rt, +
After processing the parts using the workpiece material, the outer periphery is carburized, quenched, and tempered to give the outer periphery and the core a different hardness. It has many advantages over conventional methods, such as being more durable and being available at a lower cost.

【図面の簡単な説明】[Brief explanation of the drawing]

菖1図は、本発明時計部品の一例を示す歯車の側WHl
11.第2図は本発明に係る快削炭素鋼のd−と焼戻し
lK&と[fの関係を示し 60.外周部46  d、
、o*!0.37で&る8以上 出願人 株式会社第二精工★
Diagram 1 shows the gear side WHl showing an example of the timepiece component of the present invention.
11. FIG. 2 shows the relationship between d-, tempering lK&, and [f of the free-cutting carbon steel according to the present invention.60. outer peripheral part 46 d,
,o*! Applicant with 0.37 & 8 or above Daini Seiko Co., Ltd.★

Claims (1)

【特許請求の範囲】[Claims] 重量比で0.35〜o、sBの炭素を含む快削炭素鋼管
用い、所要の時計部品形状に:mm後後浸炭、脅化等の
表面処31It−行った後、焼入、111真しを行い、
部品の外周部と芯部を異なる硬tK調質したことtIf
!#黴とする時計部品の製造方法。
Using a free-cutting carbon steel pipe containing carbon with a weight ratio of 0.35 to 0, sB, the required shape of the watch part is made into the shape of the required watch part. and
If the outer periphery and core of the part are tempered with different hardness tK.
! #Manufacturing method of watch parts using mold.
JP15696881A 1981-10-02 1981-10-02 Manufacture of parts for timepiece Pending JPS5858271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15696881A JPS5858271A (en) 1981-10-02 1981-10-02 Manufacture of parts for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15696881A JPS5858271A (en) 1981-10-02 1981-10-02 Manufacture of parts for timepiece

Publications (1)

Publication Number Publication Date
JPS5858271A true JPS5858271A (en) 1983-04-06

Family

ID=15639252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15696881A Pending JPS5858271A (en) 1981-10-02 1981-10-02 Manufacture of parts for timepiece

Country Status (1)

Country Link
JP (1) JPS5858271A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092463A (en) * 1983-10-26 1985-05-24 Koyo Seiko Co Ltd Heat treatment of rolling member
JPH01294821A (en) * 1988-05-23 1989-11-28 Kawasaki Heavy Ind Ltd Manufacture of grinding rod
EP2586880A1 (en) * 2011-10-27 2013-05-01 Nivarox-FAR S.A. Verfahren zur thermischen Behandlung von mikromechanischen Bauteilen von Uhren
US12006556B2 (en) 2020-02-04 2024-06-11 Rolex Sa Method for heat treating a horological component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114516A (en) * 1973-03-07 1974-11-01
JPS54108993A (en) * 1978-02-14 1979-08-27 Riken Steel Kk Preparation of relaxation carburizing drill
JPS54133418A (en) * 1978-04-07 1979-10-17 Nippon Steel Corp Case hardening steel without producing abnormal carburized structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114516A (en) * 1973-03-07 1974-11-01
JPS54108993A (en) * 1978-02-14 1979-08-27 Riken Steel Kk Preparation of relaxation carburizing drill
JPS54133418A (en) * 1978-04-07 1979-10-17 Nippon Steel Corp Case hardening steel without producing abnormal carburized structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092463A (en) * 1983-10-26 1985-05-24 Koyo Seiko Co Ltd Heat treatment of rolling member
JPH0356305B2 (en) * 1983-10-26 1991-08-27
JPH01294821A (en) * 1988-05-23 1989-11-28 Kawasaki Heavy Ind Ltd Manufacture of grinding rod
EP2586880A1 (en) * 2011-10-27 2013-05-01 Nivarox-FAR S.A. Verfahren zur thermischen Behandlung von mikromechanischen Bauteilen von Uhren
EP2586879A1 (en) * 2011-10-27 2013-05-01 Nivarox-FAR S.A. Method for thermal treatment of micromechanical clock parts
CN103088189A (en) * 2011-10-27 2013-05-08 尼瓦洛克斯-法尔股份有限公司 Thermal treatment method for micromechanical horological parts
CN103088189B (en) * 2011-10-27 2015-11-25 尼瓦洛克斯-法尔股份有限公司 For the heat treating method of micromechanics timepiece
US9359652B2 (en) 2011-10-27 2016-06-07 Nivarox-Far S.A. Thermal treatment method for micromechanical horological parts
US12006556B2 (en) 2020-02-04 2024-06-11 Rolex Sa Method for heat treating a horological component

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