CD Bar

01.Annealing

In this process, pearlite, the raw material (wire rod) structure, is converted into a stable spherical carbide with the goal of lowering its strengths and expanding its ductility, thus improving transmutability during cold forging.

02.Pre-Straightener M/C

This equipment allows the materials to always move along the set pass-line of the descaler and drawing dies for straightening. CDM (Combined Drawing Machine) A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

03.Descaler

In this process, with an impeller, shot balls are injected onto the material surface to remove high temperature oxidized scales that are created on the metal surface during wire rolling, as well as rust and attached impurities that are created while the material is kept CDM (Combined Drawing Machine) A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

04.Drawing M/C

This equipment uses a drawing carriage which is converted into linear reciprocating motion from the motor’s rotary motion and passes wire rods through dies to continue to extend thin wire rods up to an appropriate measurement. CDM (Combined Drawing Machine) A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

05.Straightener M/C

This equipment allows the materials to always move along the set pass-line of the descaler and drawing dies for straightening. CDM (Combined Drawing Machine)A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

06.Cutting M/C

In this process, a shear bush is used to cut the continually drawn material into an appropriate length. CDM (Combined Drawing Machine) A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

07.Polishing & Straightener M/C

In this process, discs or two rolls are used to polish the product surface and straighten the product to create appropriate surface roughness and straightness in the final product. CDM (Combined Drawing Machine) A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

08.Delivery Device

A equipment that sorts produced bars from the CDM process into good and defect and then load them for delivery. CDM (Combined Drawing Machine) A comprehensive process that produces a bar type product from the raw coil type material through an integrated machine that descales, draws, cuts, polishes and straightens comprehensively.

09.Post Process

ECT & UT:Eddy Current Tester

This device inspects defects that are created on the material surface during iron and non-ferrous metal semi-production process.\

CG M/C:(Centerless Grinding M/C)

This polishing process has better measurement than CD bars and it helps to produce excellent surface finish.

Q/T：Quenching & Tempering Line Treatment

In this process, uniform mechanical properties and structure are given to the product through Q/T line of induction heater type to produce Q/T bars with high-quality straightness, thereby enabling the user to omit the correction process.

Off-line 4 roll machine

In this process, an off-line straightness correction is made to produce super-precisive straightened bar, with twice straightness than that of existing CD bars

10.Final Inspection

In this process, a finished product is inspected to assess whether the product meets required specifications.

11.Packing

In this process, the product is packed to prevent damaging, binded by unit according to the request specifications and standard packaging method prior to shipping.

12.Shipment

Scope of production

· 4mm ~ 42mm

Usage

Shaft for use in automobiles, mechanical products, office machine(Printer, Multifunction copier, Cartridge) and materials for parts such as electronics products(LCD/LED, PEM nut, etc)

Sividen has deep product application and technology accumulation, and has become a reliable partner in the automotive manufacturing industry, mechanical engineering and metal construction industry.

Cold Heading Steel