Grinding Related Knowledge
Substrate
The types of substrates are mainly paper, cloth, steel paper, composite substrates, non-woven fabrics, polyester films, etc. Each substrate is divided into several varieties due to differences in single weight, strength, thickness, and composition.
Substrate treatment
A method of treating a substrate with a substrate-treating agent. According to the requirements of use, it is mainly divided into non-water-resistant treatment and water-resistant treatment, anti-static treatment, softening treatment, high-osmosis-resistant treatment, and oil-resistant treatment, etc.
Type of abrasive
There are natural and artificial. Natural abrasives include natural emery and garnet, and artificial abrasives include corundum and silicon carbide.
granularity
It is expressed in abrasive grain size, which indicates the size of abrasive grains.
Sand planting density
Indicates the density of the distribution of abrasive grains on the surface of the abrasive tool. It is expressed by the coverage rate of abrasives on the substrate per unit area. It is divided into two types: sparse type and dense type, and can also be divided into three types: sparse, medium, and dense. The size of the sand planting density directly affects the efficiency of the grinding process. Dense abrasives have many cutting edges and high grinding efficiency. Most of the abrasives are dense sand-planted, but they have fewer gaps and a small space for chips, which is prone to blockage and burn workpieces. Sparse abrasives have the advantage of larger coated abrasives.
Sand planting method
There are two main types of sand planting methods: gravity sand planting and electrostatic planting.
binder
The types of binders mainly include animal glue, synthetic resin, and paint.
Bond strength
The degree of firmness of the abrasive bond, when the external force acts on the surface of the abrasive tool, the difficulty of the adhesive to resist the external force and make the abrasive fall off from the surface. The main factors affecting the bonding strength of abrasive tools are the type and amount of binder. Generally speaking, the strength of resin bonding is higher than that of animal glue, and paint is mainly used for the manufacture of water-resistant sandpaper. The amount of binder is large, and the bonding strength is also high.
super coating
Make the abrasive have anti-clogging, improve cutting rate, antistatic, and other properties.
shape
The abrasive products we are talking about today, such as sandpaper, etc., have different shapes and shapes, mainly sheet-shaped, roll-shaped, strip-shaped, disc-shaped, and special-shaped products.
size
The size specification of the grinding tool.
