SU891408A1

SU891408A1 - Method of producing abrasive tool

Info

Publication number: SU891408A1
Application number: SU802909131A
Authority: SU
Inventors: Мартын Ваганович Касьян; Рафик Балабекович Мартиросян; Рубен Багратович Шатворян; Гаспар Саакович Апоян; Давид Грачевич Нерсесян; Вильямс Оганесович Кирищян
Original assignee: Ереванский политехнический институт им.К.Маркса; Ереванский Завод Искусственных Алмазов И Алмазного Инструмента "Алмаз"
Priority date: 1980-04-10
Filing date: 1980-04-10
Publication date: 1981-12-23
Also published as: CS225359B1

Description

(54) СПОСОБ ИЗГОТОВЛЕНИЯ АБРАЗИВНОГО (54) METHOD FOR MAKING ABRASIVE

1one

Изобретение относитс к изготовлению алмазно-абразивного инструмента.The invention relates to the manufacture of diamond abrasive tools.

Известен способ изготовлени абразивного инструмента, при котором алмазные зерна расставл ют на фольге, листы которой чередуют в форме с шихтой, после чего производ т формовгание 1.A known method of making an abrasive tool, in which diamond grains are placed on a foil, the sheets of which alternate in form with the charge, after which the molding 1 is made.

Недостаток известного способа заключаетс в том, что при изготовлении абразивного инструмента на обычных спекаемых Металлических-св зках, температура спекани которых намного ниже температуры плавлени пропитывающих материалов, например меди, используемых при изготовлении абразивного инструмента на твердосплавной св зке, использование фольги как носител программы зерен не представл етс целесообразным, так как абразивоносный слой получаетс неоднородным из-за наличи фольги между сло ми св зки. Если ,же многослойную массу нагреть до температуры плавлени фольги, усложн етс технологи изготовлени , ухудшаютс услови , в которых наход тс алмазные зерна, и пропитываемость абразивоносного сло из-за спекани частид св зки,, что приводит к неИНСТРУМЕНТАA disadvantage of the known method is that in the manufacture of an abrasive tool on conventional sintered Metal links, the sintering temperature of which is much lower than the melting point of the impregnating materials, for example copper, used in the manufacture of an carbide-bonded abrasive tool, This seems advisable, since the abrasive layer is non-uniform due to the presence of foil between the bonding layers. If, however, the multilayer mass is heated to the melting temperature of the foil, the manufacturing process becomes more complicated, the conditions under which the diamond grains are located deteriorate, and the abrasive layer is impregnated due to the sintering of the binder, which leads to non-INSTRUMENTS

однородности абразивоносного сло и ограничивает область применени способа.abrasive layer uniformity and limits the scope of application of the method.

Недоастатками вл ютс также сложность и трудоемкость фиксации зерен на фольге. Фиксаци зерен их вдавливанием в фольгу не обеспечивает достаточной надежности , поэтому необходимо примен ть специальные кле щие веш,ества исоответствующую технологию.Shortcomings are also the difficulty and complexity of fixing the grains on the foil. Fixing the grains by pressing them into the foil does not provide sufficient reliability; therefore, it is necessary to use special adhesive materials, technology and the appropriate technology.

Цель изобретени - расширение технологических возможностей в снижении трудоемкости изготовлени абразивных инстру10 ментов.The purpose of the invention is the expansion of technological capabilities in reducing the complexity of manufacturing abrasive tools.

Поставленна цель достигаетс тем, что абразивные зерна предварительно расстанавливаютс на листах из парафина или воска и фиксируют их расположение внедрением в основу при температуре ее .разм гчени . Затем абразивный слой формуют чере дованием в пресс-форме навесок св зки и основы с зернами, уплотн каждый слой, слоистую массу нагревают до температуры плавлени материала основы и подпрессо20 вывают, далее производ т спекание и допрессовку .The goal is achieved by the fact that abrasive grains are preliminarily set on sheets of paraffin or wax and are fixed in their arrangement by implanting them into the base at a temperature of its size. Then, the abrasive layer is formed by alternating in a mold the weights of the binder and the base with the grains, compaction of each layer, the layered mass is heated to the melting temperature of the base material and the subpress is extruded, then sintering and repressing are performed.

Claims

Example. Layer-by-layer shaping of an abrasive-bearing layer of 10 mm wide for a grinding wheel of the type AChK 100 X 10 X 3 on a metal bond Ml from ASK 400/315 diamonds. As the base material, on which diamond grains are pre-laid, wax is used, the sheets of which are prepared as follows. In distilled water at 80-90 ° C, wax melts, which forms a continuous film on the water mirror. After cooling the water to 20-25 ° C, a thin wax sheet is obtained (sheet thickness 400 μm). Rings are cut out of the sheets of wax with an outer diameter of 100 mm and an inner diameter of 80 mm, they are heated to a softening temperature (35-45 ° C), a template with openings arranged according to the program is installed on the softened wax. Diamond grains are poured onto the template and lOOVo-Horo is applied to place the grains in the holes of the template using one of the known methods. When lightly pressing on the total weight of the grains, the grains placed in the holes of the grains are damaged in the bases; from wax, which, while cooling, reliably holds the grain. Excess grains are removed. Then a weighed bond is poured into the mold, leveled and compacted, wax rings with diamond grains fixed on it are placed on its surface. After forming eight layers of a multilayer, the mass is heated to the melting point of wax (90 ° C) and the layers are pressed in, the layers of the binder, replacing the volume of the wax sheets, are joined and the whole is soaked into the layers of the binder. Next, the abrasive layer, together with the intermediate ring, is sintered at 700-750 ° C and pressed to obtain final dimensions and a strong connection with the intermediate ring. The abrasive layer is connected to the housing with an intermediate ring. The use of paraffin or wax sheet grains as the basis of the program for the program, since sheets of paraffins or waxes are only program carriers and, when making abrasive wheels on virtually any bond, are removed without a trace at much lower temperatures. than the sintering temperature of these, bind. Fixing abrasive grains according to the proposed method increases the reliability of the fixation and reduces the labor intensity of manufacturing, which ultimately reduces the cost of the tool. Claims. A method of making an abrasive tool, in which the abrasive grains are placed on a sheet basis, which is placed in a mold, alternating with a slurry, and is molded, characterized in that paraffin or wax is used as the base material in order to expand technological capabilities.

2. A method according to claim 1, characterized in that the placement of the abrasive grains is carried out by incorporating them into the npit base and the temperature of softening. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 400457, cl. B 24 D 3/20, 1971.