A noisy, oil pump and found in the tank is iron analysis and processing (vigilant plasticizing motor damage to the hydraulic oil pollution)
Iron is the enemy of hydraulic components, this case analysis, the source of iron is generally from plastic motor, plastic motor is by five piston cylinder piston and cylinder, the clearance near 0.01 mm, if the hydraulic oil unclean easily cause death, injury until the card of the piston motor damage plastication plastic motor damage will cause the iron into hydraulic system, will cause the wear and tear of oil pump system fault, we change in plasticizing motor, often ignored for oil pollution treatment or afraid troublesome, but if the hydraulic system of iron processing not clean will cause plasticizing motor and oil pump, oil cylinder of continuous damage, a vicious circle, back, the big losses.
This problem of processing method for:
1 and check whether the damage plasticizing motor and motor damage without plastication.
2, the overall cleaning in hydraulic system of iron, including fuel oil cylinder action and other hydraulic components, must be clean.
3 and the movement of the oil cylinder cylinder are strained, should do.
Second, injection mold action can not work normally analysis and processing.
The operator in injection mold movement, when moulding-adjustment movement increases the pressure, flow, general is nobody noticed, when using the maximum pressure, flow could adjustable motionless, just know when machine is broken, the action of increasing pressure, flow, this machine has been sick, then just ailment, such as plus renovation will soon be no matter, but don't ignore will now cause great losses, so if the above phenomenon immediately make a diagnosis and give treatment, methods and procedures are as follows:
Step up, at level ground go check whether moulding-adjustment gear bearing damage, the three-step check moulding-adjustment cheong any damage. If there is no other reason after three-steps this problem, take small energy save money. (note: switch mode should be regularly cheong lubrication)

Third, shear force on the surface quality of the plastic parts.
Plastic in plasticizing by screw in the shear, plastic injection nozzle, mold runner, products of shear shell cold. Shearing can make plastic, apparent viscosity shearing can make plastic temperature, high shear can make the birth of some components, plastic products, surface defect caused by decomposition. As 380f2 donghua material, abs, products for microwave door, the mold before in other injection machine production are not problems, but at donghua

380f2 injection molding machine manufacturing, in the edge of the products from gate underneath 5cm and fixed position well, this problem is too small for shoot tsui, and the deformation of the hole of flame retardant abs caused in injection flow process, suffered shear decomposition by about this kind of problem, analyze and solve methods are:
Step determine not damp raw material, lest produce due to tidal mixing, material in silver shall be distributed throughout the tide of silver, and the position of products.
Second step to empty out the columnar injection check whether smooth, such as rough bubbles that problem in a nitrogen-treated barrel.
The three-step inspection and shoot tsui gate is too small or burr had caused material shear decomposition.
Fourth step check out of place in the material is well, so it melt flow of gas may be mould can successful eduction, gas compression rising raw material decomposition.