What is the difference between the working principle of a sandblasting machine and a shot blasting m

The purpose of sandblasting machine and shot blasting machine is to remove rust and oxide scale, and to do metal surface articles, sandblasting machine is to use the pressure and air flow of compressed air to work, and the abrasives used are more corundum, such as: brown corundum, white corundum, black corundum, in addition to black silicon carbide, glass beads, walnut powder, river sand and so on.

The shot blasting machine also contains a shot blasting machine, and the shot blasting machine also uses compressed air to drive the abrasive to treat the surface of the workpiece, but the shot blasting machine has a pressure tank with a higher pressure than the sandblasting machine, and the abrasive delivery force is greater, so the abrasive used in the shot blasting machine can be corundum or steel shot.

The shot blasting machine uses the motor to drive the shot blasting machine to work, because the speed of the motor is relatively high, and the power of the shot blasting machine to throw out the abrasive material is relatively large, and the abrasive used in the shot blasting machine is relatively durable and not easy to break, such as: steel shot, steel grit, steel wire shot cutting, lead shot, copper shot, aluminum shot and so on. Specifically, you can see Xiaoyang Machinery.

The difference is: sandblasting is the use of high-pressure air through the sudden tapering of the throat (jet technology) to generate negative pressure to drive the sand and air flow at the same time from the nozzle at high speed, the flying sand hits the surface of the component to achieve the purpose of rust removal; Shot blasting, on the other hand, is fed into the iron shot on the impeller that rotates at high speed, and the iron shot is thrown out at high speed to achieve the same purpose. Due to the large quality of the iron shot, the effect is better, and the reuse rate of the iron shot is high, but the equipment is more complex and the cost is high, but the dust removal effect is good.

The sandblasting is not conducive to dust removal, and the sand will be broken on the component to produce a large amount of waste sand, the reuse rate of sand is low, and the amount of waste sand removal and transportation is large.

1. Sandblasting is to use high-pressure air to increase the wind pressure through the suddenly tapering throat to drive the sand to spray out of the throat and hit the rust on the surface of the component to achieve the purpose of rust removal.

2. Shot blasting is to throw out the steel shot on the high-speed rotating impeller, and the steel shot thrown at high speed is due to the large quality of the steel shot, so it produces a strong inertia to hit the rust on the surface of the component to achieve the purpose of rust removal.

The difference is that the reuse rate of iron shot is high and the rust removal effect is good, but the equipment construction cost is high.

The reuse rate of sandblasted sand is low, the rust removal efficiency is slow, but the construction cost is low, and it is suitable for special-shaped parts and thin plate parts to remove rust.

Very large sandblasting machines, sandblasting tanks, such as boats, large iron cans or something, cost labor, and the cost is lower.

Small and medium-sized, directly with shot blasting machine, shot blasting, dust removal, sand recycling, convenient.