Cold Heading Quarity Steel Wire

About steel wire for cold heading

We work on improving ability in technical service and suggestion by making the most of the expertise and manufacturing technologies that gained through manufacture of wide variety of CHQ steel wires and Cold forging parts specializing in the automotive industry.

Feature for Cold Heading Quarity Steel Wire

  • 01

    Process design CHW steel wire designed for each cuntomer'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.

  • 02

    Corresponding to the wide size range

    We can produce many sizes of wire fromφ1 to φ50.

  • 03

    Attempt to warrent defect in the overall length of wire

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

  • 04

    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.

  • 05

    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

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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**
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

New Development Steel

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Environment reaction
High Strength Functional progress
Ultra fine grain steel wire 1) High strength (More than 900mpa) and High toughness by grain refining
2) Omission of Carburizing, Quenching/Tempering, Baking in Bolts, Screws
3) Excelent recyclability achieved by using non-alloy steel
・Screw for mobile phone
・High strength bolt and screw for automobile
・Screw for consumer electronics and degital equipment
High tensile bolt steel wire 1) High strength and High toughness by characteristic elemnt composition
2) High strength bolt with function that untouched by the delayed fracture
3) Excellent wear resistance
4) Constribution to weight saving by strengthening
・High strength bolt for automobile
Steel wire for tapping screw/bolt 1) Used as Tapping screw/bolt to High strength steel plate for automobile
2) The realization of high hardness and high toughness (High hardness in surface and lower hardness in the core)
3) Excellent cold-formability
・Tapping screw for 1000Mpa class steel plate
・High strength tapping screw/bolt
Soft magnetic steel wire 1) Excelent magnetic property
2) High amplitude permeability and Low coercive force
3) Excellent cold-formability
・Solenoid and Actuator parts
・Electronic control components
・Sensor compernents
Untempered Steel wire (Microalloyed Steel wire) 1) Used as Bolt with tensile strength rank of bolt 8.8 , 10T
2) Omission of Quenching/Tempering in Bolt
・High strength bolt for automobile

Manufacturing process

By combining the three processes of wire drawing, pickling, and heat treatment, we can create steel wire for cold heading that matches the customer's application and desired quality (size, shape, hardness, coating, etc.). We use the manufactured steel wire to create cold forged parts. We make effective use of our equipment and deliver parts with shapes that suit your needs, from net-shaped parts to cold-forged slag.

Other examples

Contributing to the preservation of cultural properties through Japanese nails

Japanese nails are made using the traditional Japanese iron manufacturing method, which involves the decarburization process of ``tatara iron making'' and ``daikaji'', which reduce iron sand with charcoal. Finished by hand. The shape of the body is square, it is resistant to rust and easy to forge weld, and because it is made of "soft iron" with a low carbon content made by tatara iron manufacturing, if there is a hard joint at the tip of the hammer, it will not be damaged. It has the characteristic that it bends by itself to avoid knots and can be fastened without damaging the wood. Japanese nails can be said to be a practical product that takes full advantage of the characteristics of iron, which has been used in wooden buildings since ancient times in Japan.

Although it is generally said that it is difficult to replace the characteristics of Japanese nails with modern steel, we were asked to cooperate in the production of Japanese nails for the conservation and repair work of the Daimon of Kokawa-dera Temple in Wakayama Prefecture, which is an important cultural property. The Daimon is thought to have been erected in 1707, and our company has researched the materials of the Japanese nails used since its construction, selected the materials, established the manufacturing process, and developed the steel for Japanese nails. By providing this information, we were able to contribute to the preservation of cultural properties.