Jiangsu zhuhong Forging Zhuhong-Traceable production - Forging shaft manufacturer

Jiangsu zhuhong Forging Co., Ltd. is a manufacturer of C and C-Mn steel, alloy steel, including forged round bar, square steel, block, and other products; the supply capacity is up to 60000 tons. The company has ISO9001:2008 certificate.

Our company was founded in 2004, has one set of 25T induction furnaces with two work positions, has lots of forging equipments and machining equipments, including one set of 13MN forging hydraulic press machine with double operator arms, one of set of 5 tons electro hydraulic hammer, two sets of 630 tons three through extrusion hydraulic machines, 10 sets of sawing machines.

Round product maximum diameter is 600mm, maximum length 13000 mm, square product size is from 130-500mm, maximum length 13000 mm.

After introducing the ingot section of DNV.GL, we will briefly introduce the forging process application and some other matters needing attention.

1 applying approval scope of steel forgings

2 approval testing plan of steel forgings

Steel forgings processing route: Open die + heat treatment + rough turn

Testing content：chemical composition,tensile testing,impact testing, microstructure, grain size,inclusion,hardness,visual examination,MT and UT.

3 agreed outsourcing heat treatment technical conditions

Mechanical properties

--for thickness or diameter greater than 50 mm, the axis shall be at least approximately one quarter thickness (mid-radius) or 80 mm, whichever is less, below any heat-treated surface.

--pay attention to raising Re value.

4 testing report of steel forgings

5 statistics of previous production of steel forgings

6 general documentation of manufacturing route and equipment of steel forgings

6.1 Introduction of company ,Business license,ISO9001 certificate, Organization structure,Quality assurance system including quality control responsibilities, Manufacturing process description, Flow charts,Testing and inspection points

6.2 List of procedures for testing and inspection

6.3 List of equipment used for testing

6.4 Calibration for relevant manufacturing and testing devices

6.5 Qualifications of personnel engaged in testing and inspection

6.6 Product identification and traceability

7 manufacturing summary of steel forgings

8 manufacturer products specification of steel forgings

9 manufacturers’ own certificate form of steel forgings

10 calibration for relevant manufacturing and testing devices

11 Material Declaration on ASBESTOS

12 Procedure for direct contact forging shaft manufacturer ultrasonic test of forged and rolled steel bars

13 Procedure for ultrasonic test of steel forgings

14 Procedure for magnetic test of steel forgings and rolling forgings

Some other points to note:

All testing equipment needs to provide calibration report.

All processes are on-site, and all sampled items are stamped by third parties

Pay attention to internal management of the company, 6s management (Seiri, Seiton, SeiSo, SeiketSu, ShitSuke, Security)

All products can be traced back to the source

The product can achieve Marine level, DNV.GL is not only a certificate, but also a specification of the production process.