Parting line: Difference between revisions
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a '''parting line''', in industrial casting of [[Molding (process)|molds]] is the border line in which draft angles change direction. That is, it is the dividing line that splits the core and cavity halves of a molded part. It is sometimes a starting point for the mold parting surface. In [[engineering drawing]], parting line is often abbreviated as PL. [[ASME]]'s Y14.8 standard specifies a symbol for parting line.<ref>http://memagazine.asme.org/Articles/2010/march/Expanding_Standard.cfm</ref> Engineering applications (seals, tight running molded parts) that require precision for shape control, call for removal of [[Flash (manufacturing)|flash]]es. Many [[molders]] will repair or even replace the mold tooling so that the flash is reduced to an acceptable tolerance or eliminated altogether. Secondary operations to remove parting line flash include hand trimming, vibratory tumbling, media blasting and cryogenic deflashing.<ref name="Nitrofreeze">{{cite web|url=http://www.nitrofreeze.com/services/deflashing/|title=Cryogenic Deflashing for Molded Plastic, Rubber & Silicone|publisher=Nitrofreeze Cryogenic Solutions|accessdate=2014-04-02}}</ref> |
a '''parting line''', in industrial casting of [[Molding (process)|molds]] is the border line in which draft angles change direction. That is, it is the dividing line that splits the core and cavity halves of a molded part. It is sometimes a starting point for the mold parting surface. In [[engineering drawing]], parting line is often abbreviated as PL. [[ASME]]'s Y14.8 standard specifies a symbol for parting line.<ref>http://memagazine.asme.org/Articles/2010/march/Expanding_Standard.cfm</ref> Engineering applications (seals, tight running molded parts) that require precision for shape control, call for removal of [[Flash (manufacturing)|flash]]es. Many [[molders]] will repair or even replace the mold tooling so that the flash is reduced to an acceptable tolerance or eliminated altogether. Secondary operations to remove parting line flash include hand trimming, vibratory tumbling, media blasting and cryogenic deflashing.<ref name="Nitrofreeze">{{cite web|url=http://www.nitrofreeze.com/services/deflashing/|title=Cryogenic Deflashing for Molded Plastic, Rubber & Silicone|publisher=Nitrofreeze Cryogenic Solutions|accessdate=2014-04-02}}</ref> |
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Revision as of 02:32, 15 February 2018
 | This article needs additional citations for verification. (February 2018) |
 | The topic of this article may not meet Wikipedia's general notability guideline. (February 2018) |
 | This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: This article is nearly unintelligible for non-engineers. Can someone with a technical background please translate this into English and add some reliable sources? Apparently it has something to do with metalworking. (February 2018) |
a parting line, in industrial casting of molds is the border line in which draft angles change direction. That is, it is the dividing line that splits the core and cavity halves of a molded part. It is sometimes a starting point for the mold parting surface. In engineering drawing, parting line is often abbreviated as PL. ASME's Y14.8 standard specifies a symbol for parting line.[1] Engineering applications (seals, tight running molded parts) that require precision for shape control, call for removal of flashes. Many molders will repair or even replace the mold tooling so that the flash is reduced to an acceptable tolerance or eliminated altogether. Secondary operations to remove parting line flash include hand trimming, vibratory tumbling, media blasting and cryogenic deflashing.[2]
References
- ^ http://memagazine.asme.org/Articles/2010/march/Expanding_Standard.cfm
- ^ "Cryogenic Deflashing for Molded Plastic, Rubber & Silicone". Nitrofreeze Cryogenic Solutions. Retrieved 2014-04-02.
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