Common Rail Valve F00VC01015 For Diesel Injector 0445110059 for Injection Needle

"Comparative sample" metallographic structure: the metallographic structure of the metal impurity block is ferrite.

Determine the source of metal impurity blockage through sample comparison.

"Comparative sample" metallographic structure: the metallographic structure of the metal impurity block is ferrite.

The metallographic structure of the "comparative sample" is as follows:

A． The metallographic structure of the pump body of the high-pressure pump is α solid solution + acicular eutectic silicon;

B. The metallographic structure of the plunger, its metallographic structure is martensite + granular carbide;

C. The metallographic structure of the plunger sleeve, the surface metallographic structure is martensite + retained austenite;

D. The metallographic structure of the injector shell, which is flaky pearlite + massive and reticular ferrite.

E. Needle valve metallographic structure, its metallographic structure is martensite + band

F. The metallographic structure of the needle valve body, its metallographic structure is martensite + granular carbide;

G. The metallographic structure of the high-pressure tubing is ferrite.

Through the above comparison, the metallographic structure of the high-pressure oil pipe is consistent with that of the metal impurity blockage, both of which are ferrite, which shows that the blockage is detached from the high-pressure oil pipe, and then determines the source of the metal impurity blockage. Finally, it is suggested that when configuring the diesel fuel supply system, the deburring and cleaning of the high-pressure fuel pipes used should be strengthened, and good results have been achieved.

With the continuous development of the market economy and the intensification of market competition, a product with strong competitiveness must have excellent performance indicators in addition to price factors, and more importantly, must have excellent reliability indicators and low failure rates in use. Therefore, improving the reliability level of products is the need of market competition and one of the prerequisites for products to be competitive.