巻号一覧
8 巻 (1982)
- 4 号 p. 121-
- 3 号 p. 79-
- 2 号 p. 39-
- 1 号 p. 1-
8 巻, 4 号
選択された号の論文の8件中1～8を表示しています
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小林 一輔1982 年 8 巻 4 号 p. 121-128
発行日: 1982/10/31
公開日: 2009/08/11
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浜本 章1982 年 8 巻 4 号 p. 128-135
発行日: 1982/10/31
公開日: 2009/08/11
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長谷川 嘉雄, 花崎 伸作, 藤原 順介, 谷口 真一郎1982 年 8 巻 4 号 p. 136-142
発行日: 1982/10/31
公開日: 2009/08/11
ジャーナル フリーThe weld or the weldline is formed, where the flow of molding compound confluents in a cavity. Adhesion at weld is imperfect. Strength of weld is low and is often lower than that of resin. However, the lowering mechanism of weld strength is not well understood yet. Few papers deal with fiber orientation and flow of molding compound in the vicinity of weld, therefore effective method for improvement has not been found. So, in order to clarify the cause of low weld strength, a weld was generated by placing an insert in a cavity and both weld strength and micro structure of weld were investigated. The main results obtained are as follows: Weld strength is very low and this came from the fiber orientation aligning along the weldline. The reacted resin with oxygen in air forms weld, which also lowers the weld strength. The weld strength is improved by preheating of BMC and by exhausting of oxygen in a cavity.抄録全体を表示PDF形式でダウンロード (8480K) -
長谷川 嘉雄, 花崎 伸作, 藤原 順介, 谷口 真一郎1982 年 8 巻 4 号 p. 143-149
発行日: 1982/10/31
公開日: 2009/08/11
ジャーナル フリーIn injection molding, the weld is formed when the flow of molding compound is injected through multi-gate or is separated by an insert followed by confluent in a cavity. Most studies on weld are concerned with strength, and little work deals with the formation and the hardening mechanism of weld. Then, the mechanism of weld formation was investigated for injection molding of Bulk Molding Compound (BMC). Forming a weld by an insert in a cavity, the behavior of a flow front and the temperature profile in the contact surface of weld were observed. The main results are as follows: The BMC being the first to flow into a cavity forms the weld after being in contact with an insert for a little while, which makes the temperature of flow front high. According, adhesion at weld becomes poor and the strength to be low. During the cross-linking reaction of resin, the reaction between radical and oxygen in air disturbs the normal hardening reaction of resin at the contact surface of weld.抄録全体を表示PDF形式でダウンロード (6699K) -
金原 勲, 劔持 潔1982 年 8 巻 4 号 p. 150-158
発行日: 1982/10/31
公開日: 2009/08/11
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1982 年 8 巻 4 号 p. 160-162
発行日: 1982/10/31
公開日: 2010/02/08
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劔持 潔1982 年 8 巻 4 号 p. 163
発行日: 1982/10/31
公開日: 2009/08/11
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金原 勲1982 年 8 巻 4 号 p. 163a
発行日: 1982/10/31
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (210K)
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