Knowledge

1. Specific gravity (density) The specific gravity of plastic is the ratio of the weight of the weighing sample to the weight of the same volume of water at a certain temperature,

Adhesive wear is a common wear method in the mechanical field. Under the action of friction and shear forces generated between contact surfaces, the adhesion and local plastic defo

At present, plastics have developed to more than 300 kinds, and there are more than a dozen of the most commonly used plastics. 1. According to the application field of plastics, i

The hydraulic system control of injection molding machine evolved from the manual remote control to the pressure single-proportional control, and then upgraded to the pressure and

1.1 Do not put anything other than plastic pigments and additives into the hopper 1.2 When the temperature of the material pipe does not reach the preset temperature, do not start

At present, CB-B gear pump is widely used in dump trucks and construction machinery control mechanisms, and its common faults and troubleshooting methods are introduced as follows

Development and production time of different plastics: 1920-1933: Polystyrene (PS), polyvinyl chloride (PVC), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), polypropyle

The usual plastic machinery is generally divided into two types, extruder is one of them, the other is injection molding machine. The extruder is to extrude the molten plastic thro

Plastics are polymer organic compounds (polymers) polymerized by low molecular organic compounds (such as: ethylene, propylene, styrene, vinyl chloride, vinyl alcohol, etc.) under

Plastic is a malleable artificial polymer organic compound (resin). Plastic refers to an artificial material composed of organic synthetic resin as the main component and with or w

1. Pump or motor noise (1) The phenomenon of suction is one of the main reasons for excessive pump noise. When the oil is mixed with air, it is easy to form cavitation phenomenon i

Generally, screws can be divided into ordinary type, gradient type, mutant type, mixing type, separation type, shunt type and various barrier type, pin type, DIS tie-tied shunt typ