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Q

PA66 flash clamping force calculation

A

PA66 flash treatment uses three approaches together: clamping force calculation, pressure control, and parting line maintenance; increasing pressure alone will only accelerate mold damage; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recur...

Injection Molding PA66；flash；clamping force；parting line；low viscosity

Q

PA66 short shot troubleshooting route

A

The root cause of PA66 short shots is mostly in flow length ratio and gates; process compensation has an upper limit, and structural modification is the thorough solution; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence

Molds & Tooling PA66；short shot；flow length ratio；gate；filling

Q

PA66 burnt three factors

A

Burning treatment investigates item by item according to the three factors of temperature, shear, and venting; most cases are the superposition of the three, and single-item adjustment is often not enough; after confirming effectiveness, fix the parameters and practices into the work instructions...

Injection Molding PA66；burnt；shear；venting；three factors

Q

PA66 silver streaks dominated by moisture

A

When PA66 has silver streaks, suspect drying first rather than process; dew point, moisture content, and moisture regain three checks are the fixed opening moves of troubleshooting; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence

Material Drying PA66；silver streak；moisture；dew point；troubleshooting sequence

Q

PA66 vent groove 0.025mm

A

PA66 vent groove depth has 0.025mm as the upper limit; walking a tightrope between gas trapping and flash, precision and cleanliness are both indispensable; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence

Material Analysis PA66；vent groove；0.025mm；flash；gas trapping

Q

PA66 wall thickness design specifications

A

PA66 wall thickness design has a clear window; uniform wall thickness plus gentle transition is the fundamental means to resolve short shots and sink marks simultaneously from the structural end; after confirming effectiveness, fix the parameters and practices into the work instructions to preven...

Molding Process PA66；wall thickness；0.8mm；flow length ratio；uniformization

Q

PA66 moisture conditioning toughening treatment

A

Moisture conditioning is the standard post-treatment for PA66 from brittle to tough; moisture absorption chambers have better consistency than traditional water boiling, and dry-state and conditioned-state data must not be mixed; after confirming effectiveness, fix the parameters and practices in...

Material Drying PA66；moisture conditioning；toughening；moisture absorption chamber；dry state conditioned state

Q

PA66 moisture absorption expansion dimensions

A

PA66 dimension management must account the water absorption into tolerances; moisture conditioning pretreatment is a necessary process, and high-precision wet-environment parts should consider material upgrade; after confirming effectiveness, fix the parameters and practices into the work instruc...

Material Drying PA66；moisture absorption expansion；dimensional stability；moisture conditioning；PA12

Q

PA66 shrinkage rate 1.5-2%

A

PA66 shrinkage rate ranks first among nylons; mold allowance reservation, wall thickness uniformization, and holding pressure compensation are the three axes of dimensional control; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence

Molding Process PA66；shrinkage rate；1.5-2%；wall thickness；holding pressure

Q

PA66 and PBT selection

A

PBT is superior for electronic precision parts, PA66 is superior for mechanical parts; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar p...

Material Drying PA66PBTdimensional stabilityselection

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