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Test Certification Report | |||||||||
Test Report No. : PJ120201106 | Inspection Manufacturer : Qingdao Pujie Industry Co. Ltd | ||||||||
Export Series | Brake Drum | Technical Requirement | Sampling Inspection | Test Result | Disqualification | Result | |||
n | Ac | Re | |||||||
A | Strength of extention Rm,Mpa | ≥220 | 1 | 0 | 1 | 234 | 0 | √ | |
Hardness,HBW | 180~240 | 194 | |||||||
Metallographic Structure | Graphite Sgape | A Shape≥90% | 1 | 0 | 1 | √ | 0 | √ | |
Grapgite Length | 3~5 Level | 5 Level | |||||||
Pearlite Quantity | ≥95% | ≥95% | |||||||
Varbide Quantity | 1~2 Level | 1 Level | |||||||
Phosphide Eutectic | 1~2 Level | 1 Level | |||||||
Chemical Component Analysis,% | C | 3.3~3.7 | 1 | 0 | 1 | 3.5 | 0 | √ | |
SI | 1.4~2.0 | 1.6 | |||||||
Mn | 0.5~0.9 | 0.8 | |||||||
P | ≤0.12 | 0.08 | |||||||
S | ≤0.10 | 0.07 | |||||||
B | Surface Quality | Casting Compent | 1. Washed by shot blasting machine 2. No residual oxide , no residual sand, has no butt, casting fin or air buddle | 1 | 1 | 2 | √ | 0 | √ |
Brake Drum | No cold shut, no crack, no cinder pig, no pore and so on | √ | |||||||
Surface of brake drum | No grease dirt | √ | |||||||
Form and location tolerance | Surface of friction cylinder radial full indicator movement,MM | ≤0.20 | 0.18 | ||||||
Surface Roughness Ra,μm | Surface of friction cylinder touch brake lining | ≤3.2 | <3.2 | ||||||
Position cylinder surface,set wheel hub | ≤3.2 | <3.2 | |||||||
Innner and out of drum disc connect place | ≤6.3 | <3.2 |
In our foundry, every stepfrom core making, molding, melting to pouringensures that the process is under control so that the high quality castings can be produced.
The uniquely designed high-flexibility automated molding line is capable of providing multi-variety, small-quantity, multi-batch continuous production, reducing the customer's minimum order quantity (MOQ).
We use energy-saving advanced medium frequency electrical furnaces to save energy and reduce melting emissions under the premise of ensuring the quality of molten iron.
At PUJIE, we are committed to achieve customer satisfaction. In fact, it is our first priority. We aim to keep pace with customer's changing needs and expectations.
From manufacturing to logistics, our mission is to supply our customers the cost saving and high efficiency solutions with our subsidiaries in different locations.