Mica washer, tube, plug
Products from mica (a washer, a tube, the plug)
Washers and linings from thermo-pertinacious micanite up to 2 mm. And over 2 mm. TU 21-25-49-79. It is applied as electroinsulators at temperature up to 500 °С. (Inclusive). Diameter of 10-300 mm. Diameter of an internal ring from 4 mm. Thickness from 0,5 mm. Manufacturing under drawings.
Tubes and plugs micanite. TU 21-25-50-79. It is applied to electric isolation of conductors of the current working at heats. Are made of mica on chromia-alumina, shellac, gluceryl-phtalate binding thermal-life up to 500 °С. Internal diameter-5-70 mm., external diameter up to 75 mm., length-25-850 mm., thickness wall-1,5-15 mm. Electric durability not less than 5 kB/mm.Micanite products are intended for electric isolation of conductors of the current working at heats. Are applied as electroinsulators at temperature up to 500 degrees inclusive. Are produced from mica on chromia-alumina, shellac, gluceryl-phtalate binding thermal-life up to 500 C.
Technical requirements on plugs, washers, tubes, linings mica insulating.
1.Dimension-under the drawings of the customer coordinated with the manufacturer.
2. Limit-in the diameters (1;-1) mm;
- On length (5;-5) mm; (1;-1) mm (depending on the size).
3. Electric durability — not less 10кВ/mm
4. The worker temperature-up to 800ºС (it is caused by temperature of decomposition слюды-natural dielectric)
5. Thickness of washers, lining-0,5 mm, it is possible to use a set on some pieces.
Characteristics mica products correspond to requirements TU 21-25-49-79 « Washers and linings from thermopertinacious mica » and TU 21-25-50-79 « Tubes and plugs mica ». Materials are applied To manufacturing details insulating on the basis of mica papers flexible, cushion, collector and heat resisting mica the materials corresponding requirements of GOST 26103-84 «. The general specifications ».
The present specifications extend on tubes and plugs mica, the representing hollow cylinders, made by winding from mica the preparations which have been pasted over by a varnish or АХФС.
Tubes and plugs are applied to electric isolation rod проводков in times and apertures on a classthermal-life В.Н.
The symbol tube and plugs should consist of the instruction of a kind of a product (the Тр-tube, Вт-plugs), internal and external diameter, length, number of the present specifications.
Identification number tube with external diameter 15 mm, internal diameter 10 mm and length 300 mm:
Тр 15-10-300 TU 21-25-50-79
Identification number of plugs with external diameter 15 mm, internal diameter 10 mm and length 100 mm:
Вт 15-10-100 TU 21-25-50-79
1. Technical requirements
Tubes and plugs should correspond to requirements of the present specifications.
1.1. The sizes
1.1.1. The sizes трубок and plugs should correspond to parameters table1
The note: Tubes and plugs with thickness up to 2 mm are issued with external
In diameter up to 20 mm.
1.1.2. Maximum deviations tube and plugs should not exceed the values specified in tabl.2
1.1.3.Tubes and plugs of other sizes can be made under the agreement between the manufacturer and the consumer.
1.1.4. To manufacturing tubes and plugs should be applied:
pinch mica phlogopite in accordance with GOST 9028-78; shellac under the documentation approved when due hereunder; a paper telephone in accordance with GOST 3553-73; spirit hydrolytic in accordance with GOST 17299-71.
1.2.1. The maintenance of mica in tubes and plugs should be not less than 70 %.
1.2.2. Presence of a paper inside tubes and plugs and small folds on an external surface is not a rejection attribute.
1.2.3. Electric durability tubes and plugs should correspond to parameters tabl.3
1.3. Packing and marks
1.3.1. Mica tubes and plugs should be packed into boxes in accordance with GOST 2991-76, laid out by a water-proof paper in accordance with GOST 8828-75 or GOST 515-77, or a paraffin paper in accordance with GOST 9569-65.
Packing should be for protection from moving tubes and plugs inside of a box at transportation.
1.3.2. The weight gross a box should not exceed 60 kg.
1.3.3. In each box the packing leaf in which it is underlined is put:
The name of manufacturer;
Symbol of production;
Net weight in kgs;
Date of packing;
Number of a box;
Number of the presents TU;
1.3.4. Marks of transport container in accordance with GOST 14192-77 with the instruction of following designations:
Symbol of production;
Number of a party;
Number of a box;
Weight gross and net in kgs;
Place of departure;
Precautionary sign: "Avoids damp".
2.1. For check of conformity of production to requirements of the present specifications should be spent acceptance, periodic and standard tests.
2.2. Each party трубок and plugs on 1.1.1-1.1.3 should be subjected to acceptance tests; 1.2.2; the present specifications.
2.3. The party is considered production of one size accompanied by one document simultaneously shipped to one consumer.
The weight of a party should not exceed 100 kg.