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Portuguese translation: ponto de mudança V/P (controle por velocidade/pressão)

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)

English term or phrase:	V/P switchover
Portuguese translation:	ponto de mudança V/P (controle por velocidade/pressão)
Entered by:	Matheus Chaud

22:48 Nov 4, 2021

The asker opted for community grading. The question was closed on 2021-11-08 11:54:20 based on peer agreement (or, if there were too few peer comments, asker preference.)

English to Portuguese translations [PRO]
Tech/Engineering - Manufacturing / máquinas

English term or phrase: V/P switchover

During the injection molding of molten polymers, the control strategy is switched from speed control to pressure control at the filling-to-packing (V/P) switchover point. V/P switchover influences part quality and process stability. V/P switchover timing traditionally depends on the degree of volumetric filling of molten polymer in the cavity and is limited to obtain a smooth and repeatable pressure curve for each injection, indicating consistent part quality. Repeatability is affected by the V/P switchover point, injection speed, holding pressure, and holding time. This study clarifies the effect of the injection speed, V/P switchover point, and first-stage holding pressure setting on cavity pressure curves and injection molding quality. These factors were optimized and verified through the injection molding of integrated circuit trays. The experimental results indicate that adjusting the rear speed of filling stage, V/P switchover point, and first-stage holding pressure, can yield the ideal pressure curve and improve process stability. Compared with the initial process parameter setting, part warpage was reduced by 40% from 0.042 to 0.025 mm, deviation of part width at the end of the filling pattern was reduced by 54% from 0.024 to 0.011 mm, and width range was reduced by 50% from 0.006 to 0.003 mm.

Lilian Magalhães KudoZ activity Questions: 5558 (6 open) (103 closed without grading) Answers: 42 Brazil
Local time: 03:53

ponto de mudança V/P (controle por Velocidade/Pressão)

Explanation:

No caso,
V/P = Velocity/Pressure = Velocidade/Pressão

https://knowledge.autodesk.com/support/moldflow-insight/lear...
The V/P switch-over indicates the point - usually a percentage of the total volume - where the injection molding machine (IMM) will change the filling process from a velocity driven (fill) to a pressure driven control (pack).

Selected response from:

Matheus Chaud
Brazil
Local time: 03:53

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ponto de mudança V/P (controle por Velocidade/Pressão)

Matheus Chaud

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peer agreement (net): +2

V/P switchover point

ponto de mudança V/P (controle por Velocidade/Pressão)

Matheus Chaud
Brazil
Local time: 03:53
Works in field
Native speaker of:

Portuguese
PRO pts in category: 145

Grading comment

thank you

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