Abstract:
Silicone grease compositions are prepared by blending a thickening agent with a liquified crosslinked organosiloxane gel produced using a platinum-catalyzed hydrosilylation reaction. The gel is liquified by application of a shearing force to the crosslinked gel. The shearing force can be applied prior to and/or during blending of the gel with the thickener.
Abstract:
The present invention provides a lubricant composition for metalworking at a temperature higher than 200.degree. C. which comprises as its active components (i) at least one alkali metal salts of phthalic acid and (ii) a glass composition comprising 20 to 70% by weight of P.sub.2 O.sub.5, 8 to 72% by weight of M.sub.2 O wherein M is an alkali metal and 0 to 80% by weight of B.sub.2 O.sub.3, the ratio of component (i) to component (ii) being about 10:90 to about 90:10 in a total amount of 100 parts by weight.
Abstract translation:本发明提供了一种用于在高于200℃的温度下进行金属加工的润滑剂组合物,其包含作为其活性组分(i)至少一种邻苯二甲酸的碱金属盐和(ii)包含20至70重量% 的P 2 O 5,8至72重量%的M 2 O,其中M为碱金属和0至80重量%的B 2 O 3,组分(i)与组分(ii)的比例为约10:90至约90:10 总量为100重量份。
Abstract:
A forging compound particularly adapted for hot die dwell forging of titanium and its alloys comprises boundary layer particles (boron nitride or graphite) and a major quantity (more than 60% by weight) of vitreous components. The vitreous components comprise diboron trioxide and silica frit containing a metal oxide wetting agent. In a preferred form, the forging lubricant comprises about 14 to 25% by weight boron nitride particles, balance, vitreous components. The latter comprise about 60% to 75% by weight diboron trioxide, balance silica glass containing cobalt oxide wetting agent in an amount of 1.0 to 3% by weight of the vitreous components. All the foregoing ingredients may be dispersed in a coatable carrier preferably comprising a solvent, e.g., xylene, in which a resin binder is dissolved. A method of using the lubricant includes coating workpieces with the lubricant, heating the workpieces to forging temperature, and imposing forging pressure on the workpiece within an enclosed die for a dwell period to creep-flow the workpiece metal into conformity with the forging die.
Abstract:
The addition of a metal chromate or dichromate to a silicone lubricating grease reduces galvanic corrosion during the lubrication of dissimilar metal surfaces which are separated by a lubricating film of the grease.
Abstract:
A composition for protection from scale and as a lubricant for the hot processing of metals is disclosed. The composition includes a mixture of fine-powder materials containing at least the following constituents: (a) 0 to 15% by weight of secondary or tertiary calcium phosphate compound, hydroxyapatite or a mixture thereof, (b) 0.1 to 35% by weight of fatty acid, fatty acid salt or a mixture thereof, (c) 1 to 90% by weight of ground borosilicate glass which in relation to the borosilicate glass contains Na, B, Si and Al in the following proportions by weight expressed by their respective oxides: 1 to 30% by weight of Na2O, 2 to 70% by weight of B2O3, 10 to 70% by weight of SiO2, and 0 to 10% by weight of Al2O3, (d) 9 to 85% by weight of condensed alkali metal phosphates, (e) boric acid, boric acid salt or a mixture thereof in an amount corresponding to a boron content, expressed by the oxide, of 0 to 3.2% by weight of B2O3, and (f) 0 to 10% by weight of graphite. The mixture has a mean particle size D50 of
Abstract translation:公开了一种用于防止水垢和用作金属热加工的润滑剂的组合物。 该组合物包含至少含有以下成分的细粉末材料的混合物:(a)0至15重量%的二次或三次磷酸钙化合物,羟基磷灰石或其混合物,(b)0.1至35重量% 脂肪酸,脂肪酸盐或其混合物,(c)1至90重量%的研磨硼硅酸盐玻璃,其相对于硼硅酸盐玻璃含有Na,B,Si和Al,其重量百分比由其各自的氧化物 :1〜30重量%的Na 2 O,2〜70重量%的B 2 O 3,10〜70重量%的SiO 2和0〜10重量%的Al 2 O 3,(d)9〜85重量% 金属磷酸盐,(e)硼酸,硼酸盐或其混合物,其量相当于由氧化物表示的硼含量为0〜3.2重量%的B 2 O 3,(f)0〜10重量% 的石墨。 该混合物的平均粒度D50 <300μm。
Abstract:
A method to make a graphite block of any desired size and with over 99% carbon purity and high density is provided. The graphite block is obtained by mixing graphite flakes of any size with graphene oxide sheets and subjecting the mixture to elevated temperature and pressure. With this method large graphite blocks can be obtained economically and fast. The graphite blocks of this invention have superlubricity characters.