Original New Common Rail 206 202 Control Valve for F00VC45204 Valve Assembly

A Surface Treatment Method for the Oil Needle of a New Fuel Injector

Follow the steps below:

1) Ultrasonic cleaning of oil needles with metal degreasing agent for 30 minutes, and then drying;

2) Pre-sputter cleaning
The cleaned and dried oil needles are put into the vacuum chamber of the closed-field unbalanced magnetron sputtering ion plating equipment, and ion sputtering cleaning is performed for 30 to 60 minutes;

3) Coating
In the vacuum chamber of the closed-field unbalanced magnetron sputtering ion plating equipment, the oil needles are sputtered with metal atoms for 10 to 20 minutes to form a transition layer of pure metal atoms, and the carbon atoms are sputtered with metal atoms for 50 to 80 minutes. Atom sputtering to form a composition gradient layer, metal atom sputtering and carbon atom sputtering for 90 to 120 minutes to form a nano-multilayer amorphous carbon film doped with trace metal atoms;

The aforementioned metal atoms are chromium Cr, or titanium Ti, or zirconium Zr, or silver.

4.The surface treatment method of a novel fuel injector needle according to claim 3, characterized in that: in said step 2), argon must be introduced into the vacuum chamber with a purity of 99.99% and a flow rate of 25 ~35 sccm.

5. The surface treatment method of a novel fuel injector needle according to claim 4, characterized in that: in said step 3), argon gas must be introduced into the vacuum chamber with a purity of 99.99% and a flow rate of 15 ~30 sccm.