design Considerations_casting.pptx
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This document provides design recommendations for castings. It recommends making patterns slightly oversized to compensate for metal shrinkage during solidification. For sand castings, it is more economical to have flat parting lines rather than contoured ones. Draft angles should also be included to allow easy removal of the pattern and casting from the mold. Heavier sections should be located closer to risers to allow thinner areas to solidify first. Sharp corners and abrupt changes in thickness should be avoided due to stresses and uneven cooling issues. Interior walls should be thinner than exterior ones to reduce thermal and residual stresses. Reinforcement is needed around holes placed in stressed areas. Balance is needed between rim, spokes and hub sizes to minimize stresses in wheel cast
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This document provides information on casting processes and terms. It defines casting as pouring molten metal into a mold cavity. Key terms discussed include patterns, cores, gates, risers, and molds. Sand casting is described as the most common casting method, using sand mixtures to form temporary molds. The document outlines the sand casting process and discusses mold properties. It also covers heating metal, pouring, solidification, and using risers to compensate for shrinkage. Overall, the document provides an overview of casting techniques and terminology.
Spencer Electroplating Service
The document provides design guidelines for electroplating ABS and ABS/PC plastic parts. It discusses considerations for part design, plating uniformity, and racking. Key recommendations include using gradual transitions between wall thicknesses, rounding edges and corners, limiting depth of features like grooves and holes, and designing parts and racks to facilitate uniform plating and contact with rack tips. Consultation with molders and platers is advised to optimize part design for molding, plating and performance.
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
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国外毕业证学位证成绩单办理流程：
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2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）。
专业服务请勿犹豫联系我！本公司是留学创业和海归创业者们的桥梁。一次办理终生受用一步到位高效服务。详情请在线咨询办理,欢迎有诚意办理的客户咨询!洽谈。
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
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8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Storytelling For The Web: Integrate Storytelling in your Design Process
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一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
学校原件一模一样【微信：6496090 】【(LSBU毕业证书)伦敦南岸大学毕业证成绩单】【微信：6496090 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微6496090
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(LSBU毕业证书)伦敦南岸大学毕业证【微信：6496090 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(LSBU毕业证书)伦敦南岸大学毕业证【微信：6496090 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
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办理(LSBU毕业证书)伦敦南岸大学毕业证【微信：6496090 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
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一比一原版(UW毕业证)西雅图华盛顿大学毕业证如何办理
UW毕业证学历书【微信95270640】做UW文凭、办UW文凭、买UW文凭Q微信95270640买办国外文凭UW毕业证买学历咨询/代办美国毕业证成绩单文凭、办澳洲文凭毕业证、办加拿大大学毕业证文凭英国毕业证学历认证-毕业证文凭成绩单、假文凭假毕业证假学历书制作仿制、改成绩、教育部学历学位认证、毕业证、成绩单、文 凭、UW学历文凭、UW假学位证书、毕业证文凭、、文凭毕业证、毕业证认证、留服认证、使馆认证、使馆证明 、使馆留学回国人员证明、留学生认证、学历认证、文凭认证、学位认证
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办理西雅图华盛顿大学西雅图华盛顿大学毕业证假文凭流程：
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2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
-办理真实使馆公证（即留学回国人员证明）
-办理各国各大学文凭（世界名校一对一专业服务,可全程监控跟踪进度）
-全套服务：毕业证成绩单真实使馆公证真实教育部认证。让您回国发展信心十足！
（详情请加一下 文凭顾问+微信:95270640）欢迎咨询！实伙伴平时山娃上学阿黑也摇头晃脑地跟去暑假用不着上学阿黑更是天天围着山娃转山娃上山除了察看埋下的野兽铁夹子看护早上逐上山的大黄牛外也觅着采草药摘红菇积攒起来拿到镇上卖山娃知道母亲身体不好家里盖新房也欠了不少钱总想趁假期赚点钱在校寄宿时用不着老向爷爷奶奶要盛夏的乡村仍旧清凉清清爽爽的山娃也过得自由自在不知为啥山娃总情不自禁地思念起城里的父亲每年暑假瞅见远乡近邻的小伙伴都争先恐后地往城里跑山娃就更思片
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International Upcycling Research Network advisory board meeting 4
International Upcycling Research Network advisory board meeting 4
Revolutionizing the Digital Landscape: Web Development Companies in India
Revolutionizing the Digital Landscape: Web Development Companies in India
design Considerations_casting.pptx
- 2. Design recommendations for casting Compensate the shrinkage of the solidified molten metal by making patterns of slightly oversize. In sand casting, it is more economical and accurate if the parting line is on a flat plane Contoured parting lines are not economical. Further, some degree of taper, or draft is recommended to provide to the pattern for its easy removal . Similar to sand casting, permanent mold castings also require draft for the easy withdrawal of the casting from the mold
- 4. In sand casting, it is recommended to attach the raiser near to the heavier section. The thinnest sections are farthest from the raiser and solidify first and then the solidification proceeds toward the direction of raiser i.e. towards the heavier section
- 5. Sharp corners in a casting design cause uneven cooling and lead to formation of hot spots in the final cast structure. Moreover sharp corner in a casting structure acts as a stress raiser. Rounding the corner decreases the severity of the hot spot and lessens the stress concentration
- 6. Abrupt changes in sections should be avoided. Fillets and tapers are preferable to sharp steps
- 7. The interior walls and sections are recommended to be 20% thinner than the outside members to reduce the thermal and residual stresses, and metallurgical changes
- 8. When a hole is placed in a highly stressed section, add extra material around the hole as reinforcement
- 9. To minimize the residual stresses in the gear, pulley or wheel casting, a balance between the section size of the rim, spokes and hub is maintained
- 10. An odd number of curved wheel spokes reduce cast-in-residual stresses
- 11. Due to pattern shrinkage, investment shrinkage and metal shrinkage during solidification, there is always a tendency for an investment part to “dish” (develop concave surfaces where flat surfaces are specified). This condition takes place in areas of thick cross section. Dishing is minimized by designing parts with uniformly thin walls
Editor's Notes
- Due to the nature of the geometry of these sections it is likely that they will contain an area where the metal casting's solidification is slower than the rest of the junction. They are located such that the material around them, which will undergo solidification first, will cut off the hot spots from the flow of molten metal. The flow of casting material must be carefully considered when manufacturing such junctions. If there is some flexibility in the design of the metal casting and it is possible you may want to think about redesigning the junction. These should reduced the likelihood of the formation of hot spots.
- Shrinkage allowance is the main factor occurring in the dimensions of wax patterns. This shrinkage allowance differs as per wax. There are three types of wax used for patterns; they are machine wax, Sprue wax and pattern wax. The proper shrinkage study should be done on the wax patterns to select the suitable wax for getting the accurate dimensions and finishing of the end product.