Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

ABS injection short shot (lack of material)

A

Check ABS short shots in the order of 'pressure and speed→temperature→venting→structure': first increase pressure and speed, then keep warm, then vent, and finally evaluate the wall thickness; the short shot method is a sharp tool for locating the last filling point.

Injection Molding ABS；short shot；lack of material；injection pressure；venting

Q

Flow marks (ripples) near the ABS gate

A

ABS flow marks are the externalization of the loss of control of the front's 'temperature and rhythm': the three axes of heating up, stabilizing speed, and large gate; high-gloss parts especially need fine front management; once ripples appear, they are difficult to cover up by post-processing.

Injection Molding ABS；flow marks；ripples；injection speed；front temperature

Q

ABS product brittle cracking——plasticizing capacity mismatch

A

Matching the ABS plasticizing capacity with the product is the first equipment gate against brittleness: too large or too small both cause brittleness; factoring in 'residence time' when selecting the machine is far more effective than adjusting the process on the wrong machine afterwards.

Injection Molding ABS；brittle cracking；plasticizing capacity；residence time；machine matching

Q

Jet filling defect appears in reaction '2079851475616104452 (RIM) foaming

A

This problem requires comprehensive analysis from multiple dimensions of material, process, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Injection Molding reaction '2079851475616104452，foaming occurrence，jet filling defect

Q

Product surface sagging

A

This problem is a typical manifestation of product surface sagging in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is rec...

Injection Molding draft angle mold polishing holding pressure cooling time release agent

Q

Multi-gate filling imbalance

A

This problem is a typical manifestation of multi-gate filling imbalance in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It i...

Injection Molding dimensional accuracy holding pressure mold temperature shrinkage rate non-return ring

Q

Tie bar breakage

A

This problem is a typical manifestation of tie bar breakage in '2079851475616104452, and the core of the solution lies in eliminating the root cause of the defect through systematic optimization of process parameters (temperature, pressure, speed) and rationality checks of mold design. It is reco...

Injection Molding tie bar breakage mold

Q

Non-return ring stuck

A

This problem is a typical manifestation of non-return ring stuck in '2079851475616104452, and the core of the solution lies in eliminating the root cause of the defect through systematic optimization of process parameters (temperature, pressure, speed) and rationality checks of mold design. It is...

Injection Molding cooling water circuit mold temperature cooling time water circuit blockage beryllium copper insert

Q

Gas needle blockage in gas-assisted injection

A

This problem is a typical manifestation of gas needle blockage in gas-assisted injection in '2079851475616104452, and the core of the solution lies in eliminating the root cause of the defect through systematic optimization of process parameters (temperature, pressure, speed) and rationality chec...

Injection Molding gas needle blockage in gas-assisted injection pressure

Q

Melt fracture

A

This problem is a typical manifestation of melt fracture in '2079851475616104452, and the core of the solution lies in eliminating the root cause of the defect through systematic optimization of process parameters (temperature, pressure, speed) and rationality checks of mold design. It is recomme...

Injection Molding dimensional accuracy holding pressure mold temperature shrinkage rate non-return ring

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