摘要:
The present invention relates to a friction material and, in particular, provides a process for producing a friction material used in, for example, brakes of trucks, cars or the like and also provides a friction material obtained by the process. The process for producing a friction material containing a fiber component, a binder component and a filler component from raw materials of a friction material through at least a mixing step, a molding step and a heat-treating step, wherein the mixing of the raw materials in the mixing step is carried out by stirring and mixing the raw materials under heating in a dry system at a temperature where the binder is softened.
摘要:
To present a control method for saving power capable of saving power in such a machine as a turret punch press, and preventing generation of noise due to operation of main motor of hydraulic unit while processing job is not done, being applied in such a machine as a metal cutting machine designed to be driven by feeding electric power to a main motor and servo amplifiers of individual axes, with the electric power supplied in both main motor and servo amplifiers of individual axes, it is designed to cut off power supply circuits to the main motor and servo amplifiers of individual axes, on the condition that the machine is not operated for processing and that the no-operation state continues for a prescribed time.
摘要:
A method and device for calculating vehicle wheel speed which counts either one of the rise or the fall of each one of the pulse signals of the wheel sensor when the wheel speed is higher than a certain amount and counts both the rise and the fall of the pulse signals when the wheel speed is lower than the certain amount. This invention reduces the calculation time for the vehicle wheel speed.
摘要:
The present invention provides an aqueous surface-treating agent and method for surface treatment of reinforcing material, which includes a carbodiimide compound as a main component; a reinforcing material surface-treated with the above aqueous surface-treating agent; and a composite material comprising a matrix and the above reinforcing material. The aqueous surface-treating agent has good storage stability, gives no bad effect on human health owing to no use of organic solvent and, when used for the surface treatment of a reinforcing material, can produce a surface-treated reinforcing material which can produce a composite material comprising a matrix and the surface-treated reinforcing material and having high adhesivity between the two components.
摘要:
The present invention provides:(A) a curing agent for powder coatings, which comprises, as a main component, a carbodiimide compound represented by the following general formula (1), (2) or (3):OCN--R.sub.1 --(NCN--R.sub.2).sub.n1 --NCO (1)R.sub.3 --NCN--R.sub.4 --(NCN--R.sub.5).sub.n2 --NCN--R.sub.6(2)R.sub.7 --R.sub.8 --(NCN--R.sub.9).sub.n3 --R.sub.10 (3)(B) a powder coating composition comprising:at least one kind of the above curing agent (A) for powder coating, anda bifunctional resin compound having a functional group reactive with carbodiimide group; and(C) powder coating film, which is obtained by reacting and curing at least one kind of the above curing agent (A) for powder coating, and a bifunctional resin compound having a functional group reactive with carbodiimide group.
摘要:
There are provided a polycarbodiimide copolymer having a main structure represented by the following formula (1): ##STR1## wherein R.sub.1 is an isocyanate residue; R.sub.2 is a polyfunctional liquid rubber residue; X is a urethane bond, an amide bond or a urea bond; p is an integer of 5 to 50; q is an integer of 1 to 5; and r is 0 or 1; and a process for producing the above polycarbodiimide copolymer, which comprises reacting a polyfunctional liquid rubber with an organic diisocyanate in excess of the rubber and then subjecting the diisocyanate components in the reaction system to carbodiimization using a carbodiimidization catalyst. The polycarbodiimide copolymer alleviates the problems of the prior art, has the excellent heat resistance inherently possessed by polycarbodiimide resins, is improved, as compared with conventional polycarbodiimide resins, in thermoformability under heating and pressure when made into a solid such as a powder or granules, and causes no blistering under heating.
摘要:
A brake pressure control device having a reliable sealing effect which lengthens the life span of the electrical and electronic parts. The solenoid valve cover (30) includes a bowl-shaped cover housing (33) and a valve cover (34). The bottom surface (31) of the cover housing (33 is inserted over the valve assembly (21) of the solenoid valve (20) to attach to the installation surface (11) of the housing (10) of the hydraulic unit. The attaching device (23) of the coil assembly (22) is provided around the valve assembly (21) in the cover housing (33), and is commonly used for also attaching the cover housing (33).
摘要:
A wood molding process which comprises treating woods with liquid ammonia, removing said liquid ammonia by evaporation, softening woods with heating and molding them into a desired shape, and treating the molded woods with hot water or steam.
摘要:
A hydraulic brake control device with an effective ease of assembly. The housing of the hydraulic control unit 40 is formed in L-shape when cross-sectioned. The vertical part 41 of the hydraulic control unit 40 and one surface of the master cylinder 30 are affixed and sealed. Plural opening and closing valves 43 are provided in the vertical part 41 of the hydraulic control unit 40. The hydraulic pump 44, the motor 45, and the auxiliary reservoir 49 are provided in the horizontal part 42.
摘要:
The present invention provides:a plasma etching electrode made of single-crystal silicon, which has an electric resistance of 0.0001-40 .OMEGA.cm, whose crystal faces are (100), which is doped with boron or phosphorus, whose surface has been subjected to an etching treatment with an acid, and which has been subjected to a heat treatment in vacuum, or a plasma etching electrode made of polycrystalline silicon, which has an electric resistance of 0.0001-40 .OMEGA.cm, which is doped with boron or phosphorus, whose surface has been subjected to an etching treatment with an acid, and which has been subjected to a heat treatment in vacuum, anda process for producing a plasma etching electrode, which comprises doping metallic silicon with boron or phosphorus, subjecting the surface of the resulting material to an etching treatment with an acid, and subjecting the surface-etched material to a heat treatment in vacuum.With the plasma etching electrode, dust generation is minimized and uniform etching can be realized.