摘要:
There is provided a carbon-ceramic brake disc assembly (200) including a carbon-ceramic brake disc (210) having a first axis hole (211) in the center thereof, and a plurality of first holes (212) around the first axis hole (211), a hat part (220) having a second axis hole (221) in the center thereof, and a plurality of second holes (222) around the second axis hole (221); and a connection unit (230) connecting the carbon-ceramic brake disc (210) and the hat part (220), including bushings (231), each of which includes a head (231 a), a body (231b) connecting to the head, and serrations (231c) protruding the outer surface of the body (231b) along the length of the body (231b), with a threaded hole (231d) pierced through the head (231a) and body (231b), lengthwise, the body (231b) being inserted into the first hole (212) in the carbon-ceramic brake disc (210), and the serrations (231c) being penetrated into the internal surface of the second hole (222) in the hat part (220) when forced to be inserted into the second hole (222) in the hat part (220), and a bolt (232) being inserted into the threaded hole (231d) in the head (231a) and body (231b) of the bushing (231). According to the present invention, both configurations of the hat part (220) and the bushing (231) are made simple at low cost. And penetration of the serrations (231c) of the bushing (231) into the hole (222) in the hat part (220) permits a firm connection between the hat part (220) and the carbon-ceramic disc (210).
摘要:
A method for manufacturing a carbon-ceramic brake disk of the present method comprises: a first step of preparing a mixture by mixing carbon fiber and phenolic resin; a second step of manufacturing a molded body by pouring the mixture into the mold and pressing; a third step of carbonizing the molded body; a fourth step of machine-processing the carbonized molded body; a fifth step of coating the machine-processed molded body with liquid phenol and hardening; a sixth step of melting silicon and permeating same into the molded body which is coated with the liquid phenol and hardened; and a seventh step of polishing the molded body which is permeated with the silicon. When using the present invention, cracks do not form on an oxidization-resistant coating layer. As a result, air cannot contact and oxidize the surface of the carbon-ceramic brake disk via the cracks thereby rendering superior oxidization resistance of the carbon-ceramic brake disk.
摘要:
The present invention relates to a carbon-ceramic brake disk and comprises: a plurality of radiation holes which are formed on a friction surface; a curved surface which is formed between the friction surface and the inner circumferential surface of the radiation holes; and grooves which are formed on the inner circumferential surface of the radiation holes. According to the present invention, the frictional heat generated from the carbon-ceramic brake disk is efficiently radiated to the outside when brake pads in a brake system press the friction surface of the carbon-ceramic disk to generate braking force. In other words, the carbon-ceramic disk is efficiently cooled. As a result, frictional heat generated from the carbon-ceramic disk that is conducted to a hat part is reduced and thereby deformation of the carbon-ceramic disk and the hat part is minimized.
摘要:
A method for manufacturing a carbon-ceramic brake disk of the present invention comprises: a first step of forming a first coating film by repeating a plurality of times coating a polyacylonitrile (PAN)-based carbon fiber (Cf-pan) with phenolic resin and carbonizing same; a second step of forming a second coating film with poly-silsesquioxane (RSiO3/2) around the first coating film; a third step of heat-processing the Cf-pan formed with the first coating film and the second coating film to transform the ingredient of the first coating film from C to C and SiC, and transforming the ingredient of the second coating film from RSiO3/2 to SiOxCy; a fourth step of preparing a mixture by mixing the first coating film having C and SiC as ingredients, the second coating film having SiOxCy as an ingredient, and phenolic resin; a fifth step of manufacturing a molded body by pouring the mixture into a mold and pressing same with a press; a sixth step of carbonizing the molded body; a seventh step of machine-processing the carbonized molded body; an eighth step of melting silicon and permeating same into the machine-processed molded body; and a ninth step of polishing the molded body which is permeated with silicon.
摘要:
A method for manufacturing a carbon-ceramic brake disk of the present method comprises: a first step of preparing a mixture by mixing carbon fiber and phenolic resin; a second step of manufacturing a first molded body by pouring the mixture into the mold and pressing, and manufacturing a second molded body by pouring the mixture into the mold and pressing; a third step of carbonizing a first molded body and carbonizing a second molded body; a fourth step of machine-processing the carbonized first molded body and machine-processing the carbonized second molded body; a fifth step of coupling the first machine-processed first molded body to the machine-processed second molded body; a sixth step of melting silicon and permeating same into the coupled first molded body and the second molded body; and a seventh step of polishing the first molded body and the second molded body which are permeated with the silicon. When using the present invention, the coupling force between a friction layer and a supporting layer becomse larger so that the friction layer does not separate away from the supporting layer when braking. As a result, braking performance of the carbon-ceramic brake disk is continuously maintained. Also, vibration and noise generated by a pad irregularly contacting the friction layer can be prevented by the friction layer being separated away from the supporting layer. In addition, oxidization of the supporting layer from being exposed to the exterior can be prevented.
摘要:
The present invention relates to a method of more precisely and easily realizing cooling channels constituting a ceramic brake disk rotor. In order to achieve an object of the invention, there is provided a method of manufacturing a ceramic brake disk rotor having internal cooling channels, comprising the steps of: (a) producing loading portions 110, 210, frictional surfaces 120, 220, and vanes 300 of the disk rotor respectively through separate processes using a carbon fiber reinforced carbon-carbon composite; (b) fabricating the loading portions 110, 210, frictional surfaces 120, 220, and vanes 300 re¬ spectively produced through separate processes into one structure and (c) performing a liquid silicon-melt infiltration process for the fabricated one structure. According to the present invention, a shape of the cooling channel can be economically and easily realized, and furthermore the dimensional precision of the cooling channel is enhanced, thereby having an effect of improving the performance of the disk rotor.
摘要:
The present invention relates to a DIH -structured brake disk integrally formed with a drum for parking brake and a disk rotor for disk brake. In order to accomplish the object, the present invention provides a DIH-structured brake disk, comprising a disk rotor formed with a disk shape having a circular hole in the center, and formed in a structure that the peripheral portion is attached to brake pads in a caliper, and a hat part for forming an outer cover of the disk rotor by combining with a body of the disk rotor through a combining member, wherein in the inner circumferential surface of the disk rotor, a drum for parking brake closed adhered to frictional material at the time of hand-lever operation by a user is integrally formed with the disk rotor. According to the present invention, the heat capacity of the disk rotor itself can be increased by integrally forming the drum for parking brake into the disk rotor, thereby having an effect of enhancing the performance of a brake (for example, heat capacity and heat radiation process) at the time of general braking.
摘要:
The present invention relates to a carbon-ceramic brake disk and a method for manufacturing same, the carbon-ceramic brake disk of the present invention comprising a first disk portion, a second disk portion which is positioned at a predetermined distance from the first disk portion, a plurality of connection portions for connecting the first disk and the second disk, and a plurality of cooling channels which are formed between the connection portions, wherein each of the first disk and the second disk includes long fibers, and wherein the connection portions include short fibers. Also, the method for manufacturing the carbon-ceramic brake disk of the present invention comprises the following steps: forming a first layer by filling a mixture including the long fibers into a mold; inserting a core, which is provided with a plurality of through-holes, into the mold so as to be positioned on the first layer; forming a second layer on the core by filling the mold with the mixture including the long fibers; and pressure-heating the first layer, the core, and the second layer, which are inside the mold. The present invention prevents damage from outside impact or high-speed driving by increasing structural strength of the connection portions for connecting the first and second disks and enhancing the efficiency of heat conductivity, and can prevent heat deformation by efficiently radiating frictional heat to the exterior, which is generated when braking.
摘要:
The present invention relates to a balancing apparatus for a rubbing roller, comprising: a rubbing roller having a side surface on which a circular opening having an inclined inner surface is formed; and a weight assembly inserted into the circular opening of the rubbing roller such that the weight assembly is attachable/detachable by means of surface pressure. According to the present invention, the weight assembly is inserted at a predetermined location in the circular opening of the rubbing roller by means of surface pressure, thus balancing the rotation of the rubbing roller with a higher degree of accuracy. In addition, the balancing apparatus for the rubbing roller has a simple structure. Further, the balancing apparatus of the present invention is configured such that the rotation of the rubbing roller is balanced when the rubbing roller is mounted on rubbing equipment, thereby eliminating the necessity of separating the rubbing roller from the rubbing equipment and thus enabling the rotation of the rubbing roller to be quickly and easily balanced.
摘要:
There is provided a porous, carbon-containing preform, including a body (CL) of unidirectional carbon fiber fabrics (C1), and a friction layer (FL) of randomly-arranged-carbon-fiber fabrics (F1), combined with the body (CL) by a needle-punching operation. According to the present invention, it is by the needle-punching operation that the friction layer (FL) of the randomly-arranged-carbon fiber fabric (F1) is formed on the body (CL) of the unidirectional carbon fiber fabric (C1) and the friction layer (FL) of the randomly-arranged-carbon-fiber (F1) is cross-linked to the body (CL) of the unidirectional carbon fiber fabric (C1 ) in producing the porous, carbon-containing preform.