SU1557118A1 - Form for joining glass with metal - Google Patents

Abstract

The invention relates to the combination of glass with metal. The goal is to improve the quality of the compound when the mold is heated from a glass wettable material with a light beam. In the form for joining glass with metal, the upper part with a groove for installing soldered parts is made of heat-resistant material and its mass is at least 2 times less than the mass of the lower part containing a socket for installing soldered parts. The contact area of the upper and lower parts is 2-4 mm ² . The upper part of the form is made corrugated with a flange. The mold is provided with a lid, the molds withstand 50-fold exposure to light. The resulting compounds have no form imprints on the glass. All parts are sealed. 2 Il.

Description

The invention relates to the connection of glass with metal and can be used in the manufacture of metal-glass housing assemblies for vacuum devices, such as hermetic inlets, etc. products.

The purpose of the invention is to improve the quality of the compound when the mold of the material wetted by the glass is heated by a light beam, as well as to increase the heating efficiency.

FIG. 1 shows a heat storage form with a sealed lead-in, a section, prior to sintering; in fig. 2 - the same after sintering.

The heat storage form consists of the upper part 1, which is irradiated with a light beam consisting of oblique rays 2, which contains a seat 3 for the installation of the metal part 4 inside and

the opening 5 for the free passage of the glass part 6, and the lower part 7, on exposed to light irradiation, having a stop 8 with an opening on which the glass part 6 and the internal metal inlet 9c are fixed. In addition, the upper part has an absorption surface - the flange 10, whose plane is arranged perpendicular to the incident radiation, its axis coincides with the axis of symmetry of the materials being joined, and the diameter is equal to

D

u ctge

where D is the diameter of the absorbing surface;

A is the distance from the focus of the entrance of the rays to the absorbing surface;

SP

ate

four

00

O is the angle between the axis of the incident radiation and the peripheral oblique beam. Thus, all the incident radiation 2 is absorbed by the upper part of the form, and the lower part is not directly exposed to the light beam. The upper part of the form also contains a cover 1 1 made of the same material. Using the proposed form receive hermetic inlets of various sizes. Soldering materials: capillary glass G-52-1, sleeve 29 NK, input 29 NK.

Metal forms are made of two parts. The tops of the molds have seats under the sleeves and openings for free passage of the capillaries without contact with them, and also have an external grooved surface. Details: sleeve, capillary, inlet are assembled in molds, which are then introduced into the zone of action of the light beam, to form joints. The light beam is produced by reflection of the xenon arc lamp radiation by a metal ellipsoidal reflector,

Example. 1. Top

Forms with a lid are made of material HN70Yu, having a working temperature of 1200 ° C. The lower part - is made of the material D16t 0.45 cal / cm s: ° C (coefficient of thermal conductivity). Lamp operation mode: 1A AO A, irradiation time 5 s, which ensures high quality junctions. The mass of the upper part is 16 g, the lower part is 35 g. The contact area of the upper and lower parts is 3 mm. The diameter of the absorption plane is D 12 mm (A 6 mm, 9–48 °). The maximum temperature of the heating of the upper part of the form is 1000 С, the lower one (T NOC.) Is 600 ° С,

Example 2. The upper part with a lid is made of an alloy, ferrochrome XI5H60, operating temperature 1390 ° С, 0.033 cal / cm-s ° С. The lower part is made of copper Ml, 0.92. Lamp mode I. 60 A, irradiation time 4 a. Mass of the upper part 15 g, lower 50 g. Contact area 4 mm. The diameter of the absorption plane is D 15 mm (A - 7 mm, Q 48 °). Tw.h - 1020 ° С T.s. 550 ° C.

0

" with

and

five

Example 3. The upper part with a lid is made of nichrome X2080, the operating temperature is 1400 ° C, 0.034 cal / cm s- ° C. The lower part of titanium is BT-1, L 0.0037 cal / cm s-C. Lamp operating mode is 1L 30 A, irradiation time is 3 s. Mass of the upper part 5 g, lower 10 g. The area of contact is 2 mm2. The diameter of the absorption plane is D 10 mm (A 5 mm, 0 48 °). T „h Voo ° S, Tn, h. 650 ° C.

All forms are exposed 50 times to light and retain their original shape and geometrical dimensions. Sticking glass to the form is not detected. The resulting compounds have no form imprints on the glass. The heating time due to the use of heat-storage forms, consisting of two parts, is reduced by 1.5–2 times as compared with solid forms. All the compounds obtained passed the electrical characteristics test; insulation resistance of hermetic inlets 50 MΩ at a test voltage of 100 V and electrical strength of 100 V (Eff) at a frequency of 50 Hz. The inputs are tested for tightness, and then subjected to climatic influences according to the program and 10-fold thermal cycles from -50 to 120 ° C with an exposure of 3 hours at extreme temperatures. All entries remain sealed after testing.

The use of the proposed heat-accumulating forms allows obtaining vacuum-tight junctions of glass with metal (without foreign inclusions in glass), increases the efficiency of heating by the light beam, increases productivity by eliminating the use of coal powder.

Claims (3)

1. A mold for joining glass with metal, containing upper and lower parts, respectively, with a groove and a socket for installing soldered parts, revealing that, in order to improve the quality of the joint when the mold is heated from a glass wettable material with a light beam, the upper 4acfb is made of heat-resistant material and its mass is not less than half the mass 515571186 the lower part, and the contact area of the upper part is made corrugated with flan-. it and the lower parts is equal to 2-4 mm-him. 2. The form according to p. I, differ- 3. Form popp. 1 and 2, about t l and sch and so that, with the purpose higher -. that she provides no heating efficiency, top Editor N. Kishtulints Compiled by S. Belobokova Tehred A. KravchukCorrector A. Obruchar Order 696 Circulation 394 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 wife cover. FIG. 2 Subscription