Repairing process of piston surface nano coating and repaired piston
A nano-coating and piston technology, applied in metal material coating technology, pistons, manufacturing tools, etc., can solve the problems of lower yield, higher production cost of preparation process, unqualified products, etc., and achieve the effect of saving production costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0174] Qualified piston preparation process
[0175] Step 1), carry out silane treatment to the finished piston, the silane treatment temperature is 50°C, the silane treatment time is 15 minutes, and a layer of silane layer of 1 micron is formed on the surface of the piston to improve the wear-reducing layer or phosphating layer and the substrate of bonding strength.
[0176] Step 2), forming a group portion anti-friction layer on the piston group portion. Using screen printing, a friction-reducing layer composed of graphite, molybdenum disulfide and nano-composite materials is formed on the piston group. The printing environment temperature is 20°C, the printing humidity is 25RH%, the pre-cooling temperature is 25°C, and the coating printing thickness is 10°C. Micron; curing temperature 190 ° C, curing time 12 minutes.
[0177] In step 3), the overall phosphating treatment is carried out on the piston after printing the nano-coating. The process of phosphating treatment in...
Embodiment 2
[0181] Use a mixture of iron sand, white corundum sand and resin balls for sandblasting on the piston skirt with unqualified printed nano-coating;
[0182] Iron sand 5-10% by weight; white corundum sand 20-30% by weight; the balance is resin balls, a small amount of iron sand is to form tiny gaps on the surface of unqualified nano-coatings, and the mixture of white corundum sand and resin balls is to pass The micro gap further removes the unqualified nano-coating.
[0183] Among them, the specifications of iron sand are: 0.4~0.6mm particle size percentage 75%, 0.6~0.8mm particle size percentage less than 25%, 1.0~1.18mm particle size percentage less than 2%, 0.63 below 8% particle size percentage, sand particles exceeding 1.18mm are not allowed ; The particle size of white corundum is 50-100 mesh.
[0184] The shape of the iron sand is regular angular iron sand; the hardness is 56HRC, and the composition of the iron sand is shown in Table 1.
[0185] Table 1
[0186] ...
Embodiment 3
[0206] Use a mixture of iron sand, white corundum sand and resin balls for sandblasting on the piston skirt with unqualified printed nano-coating;
[0207] Iron sand 5-10% by weight; white corundum sand 20-30% by weight; the balance is resin balls, a small amount of iron sand is to form tiny gaps on the surface of unqualified nano-coatings, and the mixture of white corundum sand and resin balls is to pass The micro gap further removes the unqualified nano-coating.
[0208] Among them, the specifications of iron sand are: 0.4-0.6mm particle size percentage 70%, 0.6-0.8mm particle size percentage less than 25%, 1.0-1.18mm particle size percentage less than 2%, 0.63 or less particle size percentage less than 8%, and sand particles exceeding 1.18mm are not allowed ; The particle size of white corundum is 50-100 mesh.
[0209] The shape of the iron sand is regular angular iron sand; the hardness is 60HRC, and the composition of the iron sand is shown in Table 3.
[0210] table 3 ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
| Granularity | aaaaa | aaaaa |
| Thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More