大阪精工株式会社は冷間圧延設備、熱間圧延設備で異形鋼線、鋼棒、磨棒鋼の製造・加工のプロフェッショナルです。

Cold Heading Quality Steel Wire
(CHQ steel wire)

  • Cold Heading Quality Steel Wire (CHQ steel wire)
  • Cold Forging Parts
  • Shaped steel wire & bar
Information of New develop material
Strength of Osaka Seiko
Approach to Ecology

 Feature for Osaka Seiko

1.Process design of CHQ steel wire designed for each customer’s requirement

We suggest to the manufacturing engineering design in CHQ steel wire that meet customer's requirement and characteristics of product which customer produces. It's grounded on our CHQ steel wire manufacturing technologies cultivated over the years and know-how that incorporate our thought acquired by manufacturing cold forged parts.

2.Corresponding to the wide size range

We can produce many sizes of wire fromφ1 to φ50.

3.Attempt to warrant defect in the overall length of wire

It is possible to remove or mark the portion including surface defects by Eddy Current Machine. (EC)

4.Suggestion of CHQ steel wire with new function

We can supply suitable wire which meets the needs of customers according to the desire of with steelmaker.

5.Non Phosphate Coating (NPC)

We supply wire treated with Non Phosphate Coating. In high strength bolts, the conventional phosphoric lubricant causes the delayed fracture because of the enrichment of phosphorus. Non Phosphate Coating does not include phosphorus.

Feature of Coatin

1. “NPC” lubricant does not include phosphorus (P). Therefore NPC does not influence the delayed fracture of the high strength bolts.

2. “NPC” improves the lifetime of molds compare to the conventional lime coating because it is powerful lubrication.

3. “NPC” contributes good environment in the plant because of reduction of the dust pollution with the powerful adhesion.

4. “NPC” lubricant is Water-soluble coating and is possible to remove the coating easily after the cold forging.
So It contributes to improve the surface quality after Plating and Heat treatment.

Product Menu

Steel Grade
JIS Carbon steel wires for cold heading and cold forging SWCH**
Boron steel wires for cold heading and cold forging SWCHB**
Low-alloyed steel wires for cold heading and cold forging SMn***, SMnC***, SCR***, SCM***,    SNC***,   SNCM***,
Carbon steel wires for machine structural use S**C, S**CK
Structural steel wires with specified hardenability bands(H steels) SMn***H, AMnC***H, SCR***H, SCM***H, SNCM***H
Soft magnetic steel wires SUY*
Spring steel wires SUP**
Free cutting steel wires SUM**, SUM***
Bearing steel wires SUJ*
Alloy steel bolting materials for high temperature service SNB**
Rolled steel wires for general structure SS
Rolled carbon steel for cold finished steel bars SGD
AISI & SAE 10**, 12**, 41**, 51**, 52**
Special Standard MES(MAZDA), TS(TOYOTA),
HES(HONDA), NES(NISSAN)
New Develop Material Ultra fine grain steel wire
Steel wire for High tensile bolt
Steel wire for High tensile tapping screw
Steel wire for High tensile tapping bolt
Soft magnetic steel wire
Untempered steel wire ( Microalloyed steel wire)
Carbon tool steel wire

“*” means that put in numbers
Ex.) S**C=S45C

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Headquarters plant TEL:+81-72-982-2721 FAX:+81-72-987-10945-7-59 Nakaishikiricho Higashiosaka, Osaka
Nara plant TEL:+81-745-44-2303  FAX:+81-745-43-0504712-7 Touin Kawanishicho Shiki, Nara
Kyusyu plant TEL:+81-93-761-3030  FAX:+81-93-761-67671-120-2 Hibikimachi wakamatsu-ku kitakyushu, Fukuoka
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