JP2656831B2 - Manufacturing method of high strength weld nut - Google Patents
Manufacturing method of high strength weld nutInfo
- Publication number
- JP2656831B2 JP2656831B2 JP1112478A JP11247889A JP2656831B2 JP 2656831 B2 JP2656831 B2 JP 2656831B2 JP 1112478 A JP1112478 A JP 1112478A JP 11247889 A JP11247889 A JP 11247889A JP 2656831 B2 JP2656831 B2 JP 2656831B2
- Authority
- JP
- Japan
- Prior art keywords
- strength
- nut
- weld nut
- manufacturing
- strength weld
- 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
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は例えば自動車のボディへ各種部品を取り付け
るために使用される高強度ウエルドナットの製造方法に
関するものである。Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a high-strength weld nut used for attaching various parts to, for example, an automobile body.
（従来の技術） ウエルドナットはそれ自体を自動車のボディ用鋼板等
に溶接して使用されるものであるため、溶接性に優れた
材質からなるものであるが、強度の点では一般のナット
に比較して優れたものではない。そこで特に強度が要求
される部分には高強度のウエルドナットが求められる
が、一般に高強度材は溶接熱により強度が劣化し易い欠
点がある。このため従来は第２図に示されるように、高
強度材からなるナット（10）の外側を溶接性に優れたプ
レス材（11）で包み、このプレス材（11）を相手材（1
3）に溶接することにより溶接熱からナットを保護する
工夫がなされていた。しかし第２図のようなナットはコ
スト高となり、またナット溶接の作業性も悪いものであ
った。(Prior art) Since a weld nut is used by welding itself to a steel plate or the like for an automobile body, it is made of a material having excellent weldability. It is not superior in comparison. Therefore, a high-strength weld nut is required particularly in a portion where strength is required. However, in general, a high-strength material has a disadvantage that the strength is easily deteriorated by welding heat. For this reason, conventionally, as shown in FIG. 2, the outside of a nut (10) made of a high-strength material is wrapped with a press material (11) having excellent weldability, and this press material (11) is wrapped with a mating material (1).
A method was used to protect the nut from welding heat by welding to 3). However, the nut shown in FIG. 2 is expensive and the workability of the nut welding is poor.
（発明が解決しようとする課題） 本発明は上記した従来の問題点を解決して、直接溶接
を行っても強度が劣化することのない高強度ウエルドナ
ットの製造方法を提供するために完成されたものであ
る。(Problems to be Solved by the Invention) The present invention has been completed to solve the above-mentioned conventional problems and to provide a method of manufacturing a high-strength weld nut in which the strength does not deteriorate even when direct welding is performed. It is a thing.
（課題を解決するための手段） 上記の課題を解決するためになされた第１の発明は、
カーボン含有量が0.12％でニオブを含む非調質高張力鋼
によりナットを圧造し、ねじ切り後、ブルーイング処理
を施すことを特徴とするものである。(Means for Solving the Problems) A first invention made to solve the above problems is as follows.
The nut is forged with a non-heat treated, high-strength steel containing 0.12% of carbon and containing niobium, and is subjected to a bluing process after thread cutting.
また同一の課題を解決するためになされた第２の発明
は、カーボン含有量が0.18〜0.23％でボロンを含む低カ
ーボンボロン鋼によりナットを圧造し、ねじ切り後、焼
入れ焼戻し処理を施すことを特徴とするものである。A second invention made to solve the same problem is characterized in that a nut is forged from a low carbon boron steel containing 0.18 to 0.23% of carbon and containing boron, and then subjected to quenching and tempering after thread cutting. It is assumed that.
第１の発明においては、例えば一般に市販されている
非調質高張力鋼を素材として使用する。この非調質高張
力鋼はカーボン含有量が0.12％でニオブを含むものであ
って、例えばC0.12％、Si0.22％、Mn0.134％、P0.001
％、S0.006％、Cr0.05％、Al0.032％、Nb0.05％、残部F
eの化学組成を持つ高靱性高張力線材である。このよう
な非調質高張力鋼を素材として、常法によりナットの冷
間圧造とねじ切りを行った後、ブルーイング処理が施さ
れる。ブルーイング処理は冷間加工された材料を250〜4
50℃に加熱して冷間加工による内在応力の除去と降伏強
さを高める熱処理を意味し、これにより非調質高張力鋼
から成形されたナットはねじ抜け荷重がブルーイング処
理前よりも５％以上も増加し、高強度ウエルドナットと
なる。しかもこのようにして製造された高強度ウエルド
ナットは加熱されても硬さ上昇や脆弱化が生じにくく、
また少量のニオブを含有させたことにより溶接性が高め
られ、直接相手材に溶接しても強度が劣化することがな
い。In the first invention, for example, a commercially available non-heat treated high-strength steel is used as a material. This non-heat treated high tensile steel has a carbon content of 0.12% and contains niobium. For example, C0.12%, Si0.22%, Mn0.134%, P0.001
%, S0.006%, Cr0.05%, Al0.032%, Nb0.05%, balance F
It is a high toughness and high tensile strength wire having the chemical composition of e. Using such a non-heat treated high-strength steel as a material, the nut is subjected to cold heading and thread cutting by a conventional method, and then subjected to a bluing treatment. Blueing process for cold worked material 250 ~ 4
Heat treatment at 50 ° C means removal of intrinsic stress by cold working and heat treatment to increase yield strength, whereby nuts formed from non-heat treated high-strength steel have a 5% less threading load than before bluing. % Or more, resulting in a high-strength weld nut. Moreover, the high-strength weld nut manufactured in this manner is less likely to increase in hardness or become brittle even when heated,
In addition, by including a small amount of niobium, the weldability is enhanced, and the strength does not deteriorate even when directly welded to the counterpart material.
次に第２の発明においては、例えば一般に市販されて
いる低カーボンボロン鋼を素材として使用する。この素
材はC0.18〜0.23％、Si0.15〜0.35％、Mn0.95〜1.25
％、P0.03％以下、S0.03％以下、Cr0.20％以下、B0.000
5％以上、残部Feの化学組成を持つ鋼材である。このよ
うな低カーボンボロン鋼に常法によりナットの冷間圧造
とねじ切りを行い、焼入れ焼戻し処理が施される。焼入
れは水焼入れ法又は油焼入れ法によって行われ、その後
400℃以下で焼戻し処理を行う。焼戻し温度が高くなる
と伸び率や衝撃値は増加するが引張強さや耐力は逆に低
下するので、100〜300℃程度で焼戻しを行うことが好ま
しい。このように低カーボンボロン鋼の焼入れ焼戻し処
理により得られたナットは引張強度が120〜150kg/mm2と
なり、しかも溶接熱により加熱されても脆弱化すること
がなく、ウエルドナットとして直接相手材に溶接するこ
とができる。Next, in the second invention, for example, a commercially available low carbon boron steel is used as a material. This material is C0.18 ~ 0.23%, Si0.15 ~ 0.35%, Mn0.95 ~ 1.25
%, P0.03% or less, S0.03% or less, Cr0.20% or less, B0.000
It is a steel material with a chemical composition of 5% or more, with the balance being Fe. Such low carbon boron steel is subjected to cold heading and thread cutting of a nut by a conventional method, and is subjected to a quenching and tempering treatment. Quenching is performed by water quenching or oil quenching, and then
Perform tempering at 400 ° C or less. When the tempering temperature increases, the elongation and the impact value increase, but the tensile strength and the proof stress decrease in reverse. Thus low carbon boron steel nut obtained by quenching and tempering treatment of tensile strength 120~150kg / mm 2, and the addition without weakening be heated by the welding heat, the direct mating member as weld nuts Can be welded.
以上に説明したように、本発明により製造された高強
度ウエルドナット（１）は、第１図に示されるうように
直接相手材（２）へ溶接しても高強度を保つことがで
き、第２図に示された従来のもののように複雑な構造と
する必要がない。As described above, the high-strength weld nut (1) manufactured according to the present invention can maintain high strength even when directly welded to the counterpart material (2) as shown in FIG. It is not necessary to have a complicated structure as in the prior art shown in FIG.
（発明の効果） 本発明は以上に説明したように、直接溶接を行っても
強度の劣化のない高強度ウエルドナットを提供すること
ができるものであるから、従来の問題点を一掃した高強
度ウエルドナットの製造方法として、業界に寄与すると
ころは極めて大きいものである。(Effects of the Invention) As described above, the present invention can provide a high-strength weld nut that does not deteriorate in strength even when it is directly welded. As a method for manufacturing weld nuts, the contribution to the industry is extremely large.
第１図は本発明方法により製造された高強度ウエルドナ
ットの斜視図、第２図は従来の高強度ウエルドナットの
一部切欠斜視図である。FIG. 1 is a perspective view of a high strength weld nut manufactured by the method of the present invention, and FIG. 2 is a partially cutaway perspective view of a conventional high strength weld nut.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−121620（ＪＰ，Ａ) 特公 昭56−36203（ＪＰ，Ｂ２) 特公 昭47−44858（ＪＰ，Ｂ２) 特公 昭54−41982（ＪＰ，Ｂ２) ──────────────────────────────────────────────────の Continuation of front page (56) References JP-A-63-121620 (JP, A) JP-B-56-36203 (JP, B2) JP-B-47-44858 (JP, B2) JP-B-54- 41982 (JP, B2)
Claims (2)
調質高張力鋼によりナットを圧造し、ねじ切り後、ブル
ーイング処理を施すことを特徴とする高強度ウエルドナ
ットの製造方法。1. A method for producing a high-strength weld nut, comprising: forging a nut with a non-heat-treated, high-strength steel containing 0.12% of carbon and containing niobium;
含む低カーボンボロン鋼によりナットを圧造し、ねじ切
り後、焼入れ焼戻し処理を施すことを特徴とする高強度
ウエルドナットの製造方法。2. A method for producing a high-strength weld nut, comprising: forging a nut from a low carbon boron steel containing 0.18 to 0.23% of carbon and containing boron; cutting the thread; and performing a quenching and tempering treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1112478A JP2656831B2 (en) | 1989-05-01 | 1989-05-01 | Manufacturing method of high strength weld nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1112478A JP2656831B2 (en) | 1989-05-01 | 1989-05-01 | Manufacturing method of high strength weld nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02290922A JPH02290922A (en) | 1990-11-30 |
| JP2656831B2 true JP2656831B2 (en) | 1997-09-24 |
Family
ID=14587640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1112478A Expired - Lifetime JP2656831B2 (en) | 1989-05-01 | 1989-05-01 | Manufacturing method of high strength weld nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2656831B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3940270B2 (en) * | 2000-04-07 | 2007-07-04 | 本田技研工業株式会社 | Method for producing high-strength bolts with excellent delayed fracture resistance and relaxation resistance |
| US9375800B2 (en) | 2007-08-11 | 2016-06-28 | Honda Motor Co., Ltd. | Sealed weld element for attachment to a vehicle component and method |
| DE112010004308T5 (en) * | 2009-11-06 | 2012-12-13 | Kabushiki Kaisha Yoshino Kosakujo | A method of making a thin connector part and a pair of thin connector parts |
| JP5622489B2 (en) * | 2010-08-25 | 2014-11-12 | 株式会社吉野工作所 | Thin metal joint |
| CN103757181A (en) * | 2013-11-26 | 2014-04-30 | 常熟市福熙机械零部件制造有限公司 | High-strength nut heat treatment technology |
| DE102016122323A1 (en) | 2016-11-21 | 2018-05-24 | Illinois Tool Works Inc. | Weldable threaded plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441982A (en) * | 1977-09-09 | 1979-04-03 | Yoshino Kogyosho Co Ltd | Decorative body made of clear hard synthetic resin |
| JPS5636203A (en) * | 1979-08-31 | 1981-04-09 | Toshiba Corp | Oscillating circuit |
| JPS63121620A (en) * | 1986-11-10 | 1988-05-25 | Kobe Steel Ltd | Production of non-heattreated male screw parts for joining |
-
1989
- 1989-05-01 JP JP1112478A patent/JP2656831B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02290922A (en) | 1990-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |