SU144033A1 - A method of manufacturing a cermet porous tape from powders of metals and alloys - Google Patents

Description

The known methods of manufacturing a cermet porous tape from various metals and alloys do not provide sufficiently thin tape of the required quality.

A distinctive feature of the proposed method of making a cermet porous tape from metal powders and alloys is that the initial mixture of powders with a plasticizer is pressed into billets, which are then cut along their axis, straightened into a tape, dried, and finally sintered. In this way, thinner cermet tapes can be made than by lime methods.

To obtain a ribbon, the initial powders are first mixed with a plasticizer, in which tragant, starch, rye flour, aluminum oxychloride, and others can be used. The prepared plastic mass is squeezed out on the press through the annular gap of the press tool. When the tube exits the press tool, it is automatically cut along the axis with a knife attached to the end of the press tool mouthpiece. The cut plastic tube is unfolded and a pressed tape is obtained. For straightening, the tape can either be passed through smoothing rollers, or be wound on a drum, or applied to the plates for drying. The straightened ribbon is dried and then baked.

Changing the size of the initial powders or using fillers that are removed from the material for the next, their manufacturing stages (drying, sintering, roasting), as well as selecting the sintering mode, you can get thin metal tapes with the required pore sizes and total porosity.

No. 144033-2. To obtain a compact impermeable tape, no fillers are introduced into the starting powders, and by selecting the dispersion of powders, pressing and sintering modes, a compact tape of the required quality is made.

The described methods can be made of metal-ceramic as a porous and compact tape with a thickness of 0.08 to 1.0 mm and more, with a width of up to 300 mm and a length of up to 1000 mm and more. The tape can be made from plastic metals and alloys (copper, nickel, monel metal, etc.), and from such solid materials as tungsten, molybdenum, borides, carbides and others.

In the manner described, a porous and compact thin tape can be made for the needs of mechanical engineering, instrument engineering, chemical engineering, energy and other areas of technology.

Subject invention

A method of manufacturing a cermet porous tape from metal and alloy powders by pressing a mixture of powders with plasticizers, characterized in that, in order to obtain a thinner ribbon, the initial mixture of metal powders and alloys with plasticizer is pressed into billets, which are then cut along their axis, straightened tape, dry and sinter.