SU1324758A1 - Method of producing bimetallic die-casting moulds - Google Patents

Abstract

The invention relates to foundry, specifically for the manufacture of bimetallic billets. cast glass molds. The purpose of the invention is to reduce the consumption of bronchi, improve the quality of the mold and reduce the complexity of their manufacture. According to this method, the matrix metal 3 is poured into the casting molds 1, 2, for example C 420, a copper rod 4 heated to 450-500 is introduced into the iron melt, which is subjected to ultrasonic treatment using an ultrasonic radiator 5, while the mass of the rod or copper 1-2% of the mass of the billet-casting. As a result of such acceptance and conditions, the copper layer is located on the expanded clay rod 6 to obtain a mold cavity. Using the method provides an increase in labor productivity, saving metal alloys, improving the quality of castings. 1 il. with (L 00 y 4 SL 00

Description

 1324758

refers to foundry

t t l

manufacture, namely for the manufacture of bimetallic cast billets | glass molds.

The purpose of the invention is to reduce the consumption of bronze, to improve the quality of the molds and to reduce the labor intensity of their manufacture.

The drawing shows the implementation of the method.

To implement the method, a form consisting of the upper 1 and lower .2 half-molds, in which the melt 3 is placed, is used.

The proposed method makes it possible to eliminate the operations: preparing the preform for the glass molds by removing the working layer; zapivku on the surface of the workpiece melt bronze; machining the surface of glass molds for the purpose of creating relief, which is achieved by combining the operation of bimetallization and shaping.

Example. The glass mold (Crystal Vase) is made by casting into ceramicized forms 1 and 2. Cast iron is used as the matrix metal 3.

. The proportion 4 of the copper alloy (rod), to-15. After pouring ultrasound wheels into the mold through a profit, enter the warmed-up portion of the membrane from the ultrasonic transducer 5. Di weighing 0.5 kg in the form of TRUTH 4, which is subjected to Ultrasound treatment with ultrasound irradiation 20

The copper alloy portion 4 melts, dissolves, and deposits on the expanded clay rod 6.

The proposed method allows to produce molded glass molds with a working composite layer up to a thickness of 2 mm, which is sufficient for glass molds. The rational method of introducing a portion directly into the melt allows to provide high quality castings with a bronze consumption of 1-2% of the casting weight, while

Claims (2)

a smaller amount of bronze relates to the Formula of the invention for molds weighing up to 50 kg. Bronze is preheated prior to the Method of making a bimetallic imprint 5. As a result of such techniques and conditions, a layer of copper is placed on a claydite rod 6 to obtain a mold cavity. The use of the proposed method provides "; t increased productivity, saving copper alloys, improving the quality of castings. 450-500 ° C, as well as accompanying molds, including the manufacture, by ultrasound treatment, of dissolving the cast iron billet mold of the bronze in the cast iron, provides an intensity of 35 and coating the working surface with a fication process, improving the micro layer of bronze, different structures and quality bimetallic surface. Heating a portion of the copper alloy to a temperature below 450 C is not 40 provides complete dissolution in thin-walled molds. When the temperature exceeds, intensive oxidation of the surface of the copper alloy occurs, which leads to a decrease in so that, in order to reduce the consumption of bronze, improve the quality of the molds and reduce the labor intensity of their manufacture, the cast iron billet is processed in the molten state by immersion in the melt of a portion of the copper alloy with a temperature of 450-500 ° C and a mass of 1-2% by weight of the casting and exposure i 5 to melt through it with ultrasound. quality castings. Editor N. Bobkova Order 2998/9 Compiled by Y. Yakovlev Tehred I.Popovich Proofreader I.Musk Circulation 740 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 The proposed method makes it possible to eliminate the operations: preparing the preform for the glass molds by removing the working layer; zapivku on the surface of the workpiece melt bronze; machining the surface of glass molds for the purpose of creating relief, which is achieved by combining the operation of bimetallization and shaping. Example. A glass mold (Crystal Vase) is made by casting into ceramicized forms 1 and 2. As the matrix metal 3 using cast iron. After pouring, a portion of the mass of 0.5 kg is heated to profit through a profit in the form of PROCUT 4, which is subjected to an ultrasound treatment using ultrasound Chatel 5. As a result of these techniques and conditions, a layer of copper is placed on a claydite rod 6 to form a mold cavity. The use of the proposed method provides "; t increased productivity, saving copper alloys, improving the quality of castings. molds, including the manufacture of cast iron billet molds and the application on the working surface of a layer of bronze, different so that, in order to reduce the consumption of bronze, improve the quality of the molds and reduce the labor intensity of their manufacture, the cast iron billet is processed in the molten state by immersion in the melt of a portion of the copper alloy with a temperature of 450-500 ° C and a mass of 1-2% by weight of the casting and exposure t di 5 to melt through it by ultrasound.