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公开(公告)号:US4482654A
公开(公告)日:1984-11-13
申请号:US459569
申请日:1983-01-20
CPC分类号: C08L61/20 , B22C1/22 , Y10T428/2993
摘要: Foundry sand grains coated with a binder composition which comprises 100 wt. parts of methylolmelamine or alkylated methylolmelamine and 5 to 100 wt. parts of a water-soluble organic compound having a hydroxyl group. The sand grains coated with the composition are effective in a low-temperature foundry, especially for forming a core in an aluminum-alloy foundry.
摘要翻译: 用粘合剂组合物涂覆的铸造砂粒,其包含100重量% 部分羟甲基三聚氰胺或烷基化羟甲基三聚氰胺和5至100wt。 部分具有羟基的水溶性有机化合物。 涂覆有组合物的砂粒在低温铸造厂中是有效的,特别是在铝合金铸造厂中形成芯体。
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公开(公告)号:US5641444A
公开(公告)日:1997-06-24
申请号:US425433
申请日:1995-04-20
CPC分类号: F16D69/026 , F16D69/02 , F16D69/04 , F16D2069/002 , F16D2069/005 , F16D2069/006 , F16D2069/0475 , F16D2069/0483 , F16D2069/0491
摘要: A method of forming a disk brake pad having a friction member composed of a bonding layer having a low porosity and a matrix layer having a high porosity and laminated on the bonding layer. The method does not require a pre-forming step. A material formed by pelletizing a mixture of components for the friction member and a non-pelletized material are fed one after the other into a cavity defined by a mold and a back plate. Also, since the pelletized material is compacted beforehand, the bonding layer formed from the pelletized material exhibits a sufficiently low porosity, so that the bonding layer can prevent moisture from infiltrating therethrough. Thus, the back plate is less likely to develop rust. Also, the bonding strength between the back plate and the bonding layer is improved. Further, since pelletized material forming the bonding layer penetrates into the matrix layer in a complicated manner, the bond strength between the bonding layer and the matrix is also improved.
摘要翻译: 一种形成具有由具有低孔隙率的接合层和具有高孔隙率的基体层构成的摩擦构件并且层压在接合层上的盘式制动衬块的方法。 该方法不需要预成型步骤。 通过将用于摩擦构件和非造粒材料的组分的混合物造粒形成的材料一个接一个地进入由模具和背板限定的空腔中。 此外,由于造粒材料预先压实,所以由造粒材料形成的接合层表现出足够低的孔隙率,使得粘结层可以防止湿气渗入其中。 因此,背板不太可能发生生锈。 此外,背板和接合层之间的接合强度提高。 此外,由于形成接合层的造粒材料以复杂的方式渗透到基质层中,所以粘结层和基体之间的结合强度也提高。
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