Quality control of numerical control hydraulic closed die forging hammer

Quality control of numerical control hydraulic closed die forging hammer

1. Quality management system

Our company has passed ISO9001:2000 quality certificate on 31 Dec, 2001, and the certificate No is 4100/200110088.

It includes “Quality manual”, “Program file”. “ Program file” includes “ File control regularization”, “Quality inspection control regularization”, “Management examine & comment regularization”, “Management regularization of Training, Evaluating,Selecting staff” etc nineteen files.

2、Quality policy & Objectives

Quality policy:

Customer first, quality first
Keeping Innovating New Products, and supplying best service，
Keeping developing, Prevention first,
Quality Objectives

Pass percent of inspection : 95%
Pass percent of leaving factory: 100%
Percent for customer’s feedback: 100%

3. Set up assembly lines of the key parts of quality management guidance points and assemble direct manual

The processing and assembly of all the key parts for numerical control hydraulic closed die forging hammer is in four plants, in order to ensure the quality of the products, our factory set up 35-point quality management in four plants. At the same time, the preparation of each key parts of homework guide book, tolerances for each process than drawings enhance the 1/3, spare parts fabrication, assembly instructions in strict accordance with requirements of processing, the requirements of key parts are 100% qualified

4 . Set up the quality record cards of the key parts

We set up the quality records cards for key parts respectively In accordance with the AD/AGC-4.0-02-2001.8, finally a summary to the whole file, convenience of the query and retrospective

5. Set up the quality record cards of the main parts

The main parts of numerical control hydraulic closed die forging hammer have quality record card, and the parts must comply with the requirements of drawings.
It is we adopt the above measures that guarantees parts assembly, final assembly and test running of numerical control hydraulic closed die forging hammer getting 98% one time, and the percent of pass for machine leaving factory, field installation and test running was 100 %.

6. Quality Inspection and laboratory of spare parts

Quality inspection system is as following:

Inspecting raw materials entering factory→Inspecting working procedure→Inspecting semi-finished product warehouse→Inspecting assembling→Inspecting before leaving factory

All the dimension of key parts should be inspected, and it ensures 100% inspection. Hardness of quenched and tempered inspection, surface roughness inspection, Nondestructive test inspection etc.

The main detection and laboratory apparatus: Physical and chemical experiments, Metallographic analysis, two stage measure, Rockwell Hardness Tester, Surface roughness instrument, Ultrasonic Flaw Detector, Magnetic Flaw Detector, etc

7. The distribution points of quality control for numerical control hydraulic closed die forging hammer

Products
Quality control points in workshops
Team Name
Quality control items
Numerical control hydraulic closed die forging hammer
Small-middle parts machining workshop
Grinding machine team
Hit valves
Small machine team
Below seal
Large parts machining workshop
Machining center
Hammer head
Machining center
Valve block
Machining center
Die seat
Grinding machine team
Cylinder bush
Grinding machine team
Hammer rod
Heat treatment workshop
A team
Heat treatment of hammer head and hammer rod
Assembly workshop
Assembling team (B team)
Assembling and test forging
Painting team
Painting