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Flow mark causes vary for specific parts and production lines due to the variability in molds, machines, and materials. For the most part they are due to varying cooling speeds of the material as it flows through the mold. [2] The different prevention methods for varying cooling speeds are as follows:
In manufacturing, the Weld line or Knit line or Meld line is the line where two flow fronts meet when there is the inability of two or more flow fronts to "knit" together, or "weld", during the molding process. These lines usually occur around holes or obstructions and cause locally weak areas in the molded part. [1]
Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting ), glasses , elastomers , confections , and most commonly ...
Injection molding of liquid silicone rubber (LSR) is a process to produce pliable, durable parts in high volume.. Liquid silicone rubber is a high purity platinum cured silicone with low compression set, good stability and ability to resist extreme temperatures of heat and cold ideally suitable for production of parts, where high quality is required.
In plastic injection, a faint mark called a witness mark (or witness line) will occur along the parting line. [1] This is unavoidable and is usually accepted despite the minor aesthetics issue. However, some part surfaces (e.g. when used for sealing [ 5 ] ) cannot tolerate witness marks, and thus either the marks must be removed post-molding or ...
Joe Alwyn has moved on from his relationship with Taylor Swift — and he believes everyone else should do the same.. In a new interview with The Guardian, the actor, 33, responded to the outlet's ...
It's a lucrative time to be an NFL quarterback. Teams are spending big money on multiyear contract extensions to lock in their signal-callers to long-term deals in hopes of having a franchise face ...
One quarter was all Ohio State really needed to prove it was better than Oregon. The Buckeyes were already up 7-0 after the first minute and the Ducks had back-to-back three-and-outs to start.
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