WELCOME TO COOPERATE MACHINERY PARTS CO., LTD

PROCESS FLOW

Induction Hardening

CO2 Welding

Final Machining

Cleaning Washing

Assembling

Painting

QUALITY CONTROL

We take production QA (QUALITY ASSURAN) seriously and follows Strict QC standards

QC Steps

1. Incoming Quality Control

2. In-Process Quality Control

3. Final Quality Control

4. Out-Going Quality Control

Laboratory

Calipers

Hardness tester

Microstructure test

Wire cutting equipment

Roughness test instruments

Key Test

Impact test

Tensile test

Surface hardness

Surface roundness

Surface roughness

CMP’s Outgoing products pass qualification rate are above 99.99%.

All CMP Rollers have 1200 hours working hour.

2 years’ warranty from production day, and DOA rate less than 0.5%.

QC-SPHERICITY AND PEARLITE REPORT

1# roundness level 2

2# roundness level 2

3# roundness level 2

1# Ball 5

2# Ball 5

3# Ball 5

QC-Shaft Roughness

QC-ROLLER SECTION REPORT

Part NumberVB0106L201Date2022-08-01Coiler TypeVB0106L201Steel Code40Mn2
SupplierHTOperatorZPFAdjusted Power9400Remark
Heating Temperature850°CHeating Time78sCooling Time40sPolymer %15%
Tempering Temperature220°CTempering Time4hWater Temperature
Water Pressure
MagnaFlux Test Result 磁粉探伤After QuenchingAfter Tempering
MicrostructureMicrostructure
CheckedGoodCheckedGood




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Thickness T=  52  mm, Type   C

Specification: S1, S5 depth Min   8  mm, Min.45HRC

                      S2,  S4 depth Min   4  mm, Min.45HRC

                      S3 depth Min   8  mm, Min.45HRC

                      Core: Min. 22HRC

QC-ROLLER SECTION REPORT

DepthS1_HRCS2_HRCS3_HRCS4_HRCS5_HRCCore _ HRC
1mm535252535223
2mm5153.553.554.553
3mm5254535453
4mm5248555152.5
5mm5443544454
6mm5429543454
7mm53.5245027.553
8mm52.5244625.554
9mm51.525302647.5
1mm5224252445.5

report-pic1

Section Picture