Sand blasting process
Sand blasting uses compressed air as the power to form a high-speed jet beam to spray the blasting material (copper ore, quartz sand, corundum, iron sand, sea sand) at a high speed on the surface of the workpiece to be treated, so that the outer surface of the workpiece surface or The shape changes. Due to the impact and cutting action of the abrasive on the surface of the workpiece, the surface of the workpiece has a certain degree of cleanliness and different roughness, and the mechanical properties of the workpiece surface are improved. Therefore, the fatigue resistance of the workpiece is increased and It increases the adhesion between it and the coating, prolongs the durability of the coating film, and is also conducive to the leveling and decoration of the coating. Compared with other cleaning processes (such as pickling, tool cleaning), the blasting process has the following characteristics:
First, sand blasting is the most thorough, most versatile, fastest and most efficient cleaning method.
Second, the blasting treatment can be arbitrarily selected between different roughnesses, and other processes cannot achieve this. Manual polishing can produce a rough surface but the speed is too slow. Chemical solvent cleaning will clean the surface too smoothly, which is not conducive to coating adhesion.
Sand blasting has the following applications:
(I) Pre-treatment of workpiece coating and workpiece bonding
Sand blasting can remove all the dirt such as rust on the surface of the workpiece, and establish a very important basic pattern on the surface of the workpiece (usually the so-called matte surface), and it can achieve different levels of roughness by exchanging abrasives with different particle sizes. Degree, greatly improving the binding force of the workpiece with coatings and plating materials. Or make the adhesive bond more firm and better quality.
(2) Cleaning and polishing of rough surface of castings and forgings and workpieces after heat treatment
Sand blasting can clean all dirt (such as oxide scale, oil stain and other residues) on the surface of the workpiece after casting and forging, and heat treatment, and polish the surface of the workpiece to improve the finish of the workpiece and beautify the workpiece.
Sand blast cleaning can make the workpiece show a uniform metal quality, make the appearance of the workpiece more beautiful, and beautify the decoration.
(Three) burr cleaning and surface beautification of machined parts
Sand blasting can clean the tiny burrs on the surface of the workpiece and make the surface of the workpiece more flat, eliminating the harm of burrs and improving the grade of the workpiece. And sandblasting can make small rounded corners at the interface of the workpiece surface, making the workpiece more beautiful and more precise.
(4) Improve the mechanical properties of parts
After sandblasting the mechanical parts, it can produce uniform and fine uneven surface (basic pattern) on the surface of the parts, so that the lubricating oil is stored, thereby improving the lubrication conditions, reducing the noise and increasing the service life of the machine.
(V) Lighting effect
抛光 Polish the surface of various workpieces to make the surface of the workpiece more beautiful.
⑵Make the workpiece smooth and non-reflective.
Company Name: Magin Dongguan Humen Meijun Wear-resistant Sandblasting Equipment Store Tel: 0769 26955965 13215392671
Address: 69 Longan 5th Road, Longyan Industrial Zone, Humen, Dongguan http://edghakxa.com