Engineering oil cylinder coating method

Abstract

The invention discloses an engineering oil cylinder coating method which is characterized by consisting of the following steps of polishing, oil pre-removal, oil removal, four-in-one phosphorization, phosphating film drying, the spraying of red iron oxide epoxy primer TNE-HD001, the preparation of working lacquer liquid, the adoption of the red iron oxide epoxy primer, the spraying of the primer, napping, sootblowing and the spraying of finish; a product paint film has level and smooth appearance, and has no such quality defects as particles, bottom exposure, bubbles, needle holes, heat rash particles, wrinkled skin, flood and flying paint misty edges; and the paint film is fine, full and the color consists with that on a standard color disk. According to the engineering oil cylinder coating method, the total adhesive force of the paint film is less than or equal to Level 1 (GB / T9286-88); and no whitening, bubbles or rust spots occur 720 hours after a neutral salt spray resistance test of the paint film is taken.

Description

technical field

[0001] The invention relates to the technical field of coating, in particular to a coating method for an engineering oil cylinder. Background technique

[0002] The surface of the engineering cylinders produced by most engineering cylinder companies is as smooth as a mirror after thread turning. And in the process of welding, assembly and pressure test in the later stage, splash liquid, hydraulic oil and sweat stains firmly adhere to the surface of the engineering cylinder and the thread groove. This has brought great difficulties to the later painting to achieve adhesion ≤ level 1 (GB / T9286-88), and corrosion resistance to ensure that it will not rust for five years. Although people have gone through many ideas and changed different processes, they have not been able to solve the problem that the paint film adhesion meets the user's requirements normally for a long time. Contents of the invention

[0003] The purpose of the present invention is to overco...

Examples

Embodiment 1

[0016] Embodiment 1, engineering oil cylinder coating method, carry out according to the following steps: 1, polish: earlier use electric angle grinder band 80 mesh emery wheel slices criss-cross to polish oil cylinder surface once, then use electric angle grinder band 120 order emery wheel slices to adopt Grind the surface of the oil cylinder again in a criss-cross manner until there are obvious grinding traces on the surface. The traces at the cylinder head and the center clamp should be more obvious and the surface is dull and smooth. Surface profile: 30~40μm, c. The surface finish is grade 4~6; 2. Pre-degreasing: Use a paint brush to dip TNE-HX100 thinner to scrub the surface of the cylinder body once, and then use a cotton cloth to dip an appropriate amount of the same thinner to scrub the cylinder body once; 3. Degreasing Oil: Use a paint brush to dip in TNE-JX102 industrial cleaning agent to scrub the surface of the cylinder once; 4. Four-in-one phosphating, first use 8%...

technical field

[0001] The invention relates to the technical field of coating, in particular to a coating method for an engineering oil cylinder. Background technique

[0002] The surface of the engineering cylinders produced by most engineering cylinder companies is as smooth as a mirror after thread turning. And in the process of welding, assembly and pressure test in the later stage, splash liquid, hydraulic oil and sweat stains firmly adhere to the surface of the engineering cylinder and the thread groove. This has brought great difficulties to the later painting to achieve adhesion ≤ level 1 (GB / T9286-88), and corrosion resistance to ensure that it will not rust for five years. Although people have gone through many ideas and changed different processes, they have not been able to solve the problem that the paint film adhesion meets the user's requirements normally for a long time. Contents of the invention

[0003] The purpose of the present invention is to overco...

Examples

Embodiment 1

[0016] Embodiment 1, engineering oil cylinder coating method, carry out according to the following steps: 1, polish: earlier use electric angle grinder band 80 mesh emery wheel slices criss-cross to polish oil cylinder surface once, then use electric angle grinder band 120 order emery wheel slices to adopt Grind the surface of the oil cylinder again in a criss-cross manner until there are obvious grinding traces on the surface. The traces at the cylinder head and the center clamp should be more obvious and the surface is dull and smooth. Surface profile: 30~40μm, c. The surface finish is grade 4~6; 2. Pre-degreasing: Use a paint brush to dip TNE-HX100 thinner to scrub the surface of the cylinder body once, and then use a cotton cloth to dip an appropriate amount of the same thinner to scrub the cylinder body once; 3. Degreasing Oil: Use a paint brush to dip in TNE-JX102 industrial cleaning agent to scrub the surface of the cylinder once; 4. Four-in-one phosphating, first use 8%...