SU835584A1 - Apparatus for isothermic forming - Google Patents

Description

The invention relates to the field of hot metal processing of pressured materials, in particular, to U.St. constructions (for long-term isothermal 01mutable.Sta.MiovoyId high-strength and low-plastic materials.

A device for isothermal punching is known, containing 1 top and bottom 1PL1ITs from the monitor, with a tool (on them tool (blocks and equipped with heating elements) and heat protection | HY: MI housings that form an IR working run, hermetic working space. one.

The disadvantage of it is the increased consumption of electric power GL1i / and insufficient performance, due to the long heating time to operating temperatures.

The aim of the invention is to reduce energy consumption and increase productivity due to additional heat generation during compression of the working space atmosphere during a working stroke.

This goal is achieved by the fact that the device for isothermal punching, containing the upper and lower plates with mounted on them instrumental blocks and. It is 1 boiled heater and element, as well as heat-shielding cages, which form when working ho. The space is equipped with a compensation chamber with a piston strung, communicated with the working space. For pressure control, the spring-loaded piston is provided with an adjustment stroke value.

When the press ram moves, in “1iz in the hermetic working space of the device, the atmosphere is compressed according to the adia: bathic process.

This allows the device to be preheated with electric heaters to a lower temperature, raising it over the operating period.

press progress to the required values.

The drawing shows a longitudinal sectional device for isothermal stamping (on the left in the initial position, on the right in the final | M).

The device for isothermal punching consists of the upper movable part containing plate 1, to which is attached the upper tool block 2 with a working joint 3. The upper tool block 2 is isolated from the environment by an upper heat shield 1M 4 and a spacer 5. The lower fixed part of the device is mounted on plate 6 on which there is a lower and strumental block 7 with a working matrix 8. In the lower section of the load-block 7, channels 9 are laid, connecting the M-shtampovy working space W with the compensation chamber swarm //, in the "waste" system there is a (spring-loaded porsche made of a metal piston 12 and a shank 13 with a collar 14 made of a low-heat conductive material, "for example, a sitalla. press; clamp nut 17. Lower tool block 7 gizol: iron from the surrounding gasket .18 and a heat shield casing 19 with a loading window 20.

The preliminary gnaw, the roar of the device, is an electronic altimeter. YMI 21. On the working matrix 8 there is a preform. 22.

The device for isothermal shta.P08 .KI. Works as follows |

Voltage is applied to electric heaters 21, which create a common thermal background of the device to a temperature, for example, C. Through the loading window 20 in the lower heat shield 19, it is heated) 1 ° to the temperature of the deformation | Zero 1000-150 ° C the matrix S, which is located on the lower instrumental block: Ke 7. Then, the downward traverse makes a working stroke, in which the entire upper mobile part of the device, consisting of plate: upper /, upper tool block 2 with working punch 3 and upper heat shield 4 start t move down. With this, the lower edge of the upper heat shield 4 closes the charging window 20 to form a mechanical working space, after which the hot air in the interstitial space 10 begins to shrink as the temperature rises according to the adia-batIe law. C | F, imaged air through channels 9 enters the compensation chamber // and begins to act and cross over Eiii.z metal noipoueHb 12 with XiBOCTOBHKOM 13, which, with its collar 14, supports - on the spring 16, which determines the pressure of hot air. The force of the spring, us 16 adjust the gland nut L7. For adjusting the air volume, the spring-loaded piston is located in the threaded cup 15, which is installed in plate 6. The device is isolated from the environment by upper and lower heat protection 4 l 19 burners and gaskets 5 and 18. At the end of the stroke, the workpiece 22 deforms between (working punch 3 and working matrix 8, after which the device returns to its original position 1, and the cycle repeats.

The presence of a threaded cup as a guide led; their course and placement in

it is spring-loaded; but its piston allows the regulation of air volume and temperature.

The use of the device allows to reduce energy consumption, increase labor productivity and increase the durability of the die tool.

Claims (2)

1. A device for isothermal punching, containing upper and lower plates with instrumental blocks mounted on them and equipped with heating elements as well as heat-shielding housings that form a tight working space during the working stroke, characterized in that, in order to reduce energy consumption and increase productivity due to additional heat generation during compression of the working space atmosphere during the pai6o4ero stroke, it is equipped with a compensation chamber with a spring-loaded piston communicated with bochim device space. 2. The device according to claim 1, that is, in that the spring-loaded piston is provided with a regulator of its stroke size. Source of information taken into account in the examination: 1. USSR author's certificate "YO 462647, cl. B 21 J 1/06, 1973 (prototype). Have