A coating process for the middle beam frame of a loader

Abstract

The invention provides a process for coating a middle beam frame of a loading machine. After a middle beam frame structure is connected, the specific spraying process is as follows: deoiling; derusting; cleaning; priming; drying; polishing; scouring; performing topcoating: diluting black vinyl perchloride enamel, air-drying bituminous enamel or magnetized iron black hydroxyacid finish coat until the viscocity is applicable to construction, and then spraying the frame for once, wherein in order to obtain a vinyl perchloride enamel film with relatively large thickness, the black vinyl perchloride enamel is firstly sprayed for a thin pass and is uniformly sprayed for once after 20 minutes; drying, namely drying bituminous enamel and hydroxyacid finish coat for 24 hours and drying vinyl perchloride enamel for 6-8 hours. The process for coating the middle beam frame of the loading machine is reasonable in process arrangement and is capable of ensuring that the middle beam frame is well protected by coatings and prolonging the service life of the middle beam frame.

Description

technical field

[0001] The invention relates to a coating process for a beam frame of a loader, belonging to the technical field of machinery. Background technique

[0002] The car frame is also called the car chassis, such as light cars, trucks, buses and loaders, etc., most of them have frames, while cars and small and medium-sized cars generally have no frames. The frame is the foundation of the entire loader, the middle beam is the foundation of the frame, and many components are fixed on the middle beam. The middle sill is located under the vehicle body and is often in contact with muddy water. Even if the anti-corrosion coating with good water resistance and weather resistance is selected, it is difficult to ensure the adhesion quality of the anti-corrosion coating without a good coating process, and it is difficult to Ensure the corrosion resistance of the middle beam frame in poor working environment, thus affecting the service life of the middle beam frame. No mat...