SU617105A1 - Shaping sleeve for making thin-wall helical-seam tubes - Google Patents

Description

(54) FORMING SLEEVE FOR THE MANUFACTURE OF THIN-WALLED HEELING PIPES

between (the strip and the inner surface of the sleeve).

This is achieved by the fact that the mold bushing is equipped with a fitting for lubricant IB supplying helical housings fixed on the outer; along: the surface of Btul1ka; with st.O pO: HY, opposite to the trarez for the task of the strip, and spiral wound with variable cross-section decreasing along the length of the sleeve to the side of the exit from its pipe.

This procedure is complete; reduction of the specific pressures during the fattening process due to the reduction of the frictional forces on the tactical surface, as in the proposed device, the strip is moving along a layer of amazka.

On the fit. 1 shows a mold sleeve, a general view; on fit. 2 is a cut. LL in FIG. one.

Forming sleeve sleeve with spiral KaHaiBKaiMH i / variable cross-section on its working inner surface and half-cut 2 for task IB of its strip. On the outer in-hub of the sleeve on the side opposite to the rifle for the task. Bands, a fitting 3 is fixed for supplying lubricant to the spiral grooves and the flange 4 for fastening the sleeve IK to the frame;

The strip is set by an IB forming sleeve and moves .00 the inner cylindrical surface, simultaneously lubricating; Plasma Omese, Coy, on the way. in spiral Kanazkas of a boat rvgul "ruyema (m pressure. The pressure in the lubrication system is created by a feeder 5, which maintains its Capostolins m within-South-200 kg / cm, depending on the contact conditions of the molding, and equals equally during the whole process of forming and the presence of its thin SL01Ya on the contact strip at the top of the strip and bushings. The blade moves as if on a lubricant cushion, which is permanently. Supported by a reamer. As a result, I push the force of a pipe with a diameter of 186 m (TU-; 14- | 3-351-7 | 5) in the forming wedge | , 32-52 (GOST 1412-70) with a task speed of 0.3.3 mm / s is 310 kg. Forming without lubrication, the pushing force is 1100 kg. Reducing the pressing forces and specific pressures during molding provides an opportunity to increase forming speed And, thereby, to increase the manufacturer; When leaving the forming sleeve, a 1K. Manhole section is reduced in size. Partial removal of the lubricating layer from the pipe surface is achieved. The thickness of the lubricant film, Uno.Si.im.ay from the pipe, is in the range of 0.01-0.02 mm and, thus, the consumption of the lubricant is 0 .2 l per 100PO.G. . meters of pipe. Next is the contact. radio frequency ava.rka pipe.

The forming bushing can be used in the tube-rolling industry at all mills for spiral welding of pipes with a diameter of

100-350 mm, manufactured by industry.

The shaping sleeve of this design allows. It is possible to reduce pushing, pressing forces and specific pressures during shaping by reducing friction coefficients of the formulated loop with the working surface of the forming sleeve, if there is grease on their contact surfaces, IB resulting in the possibility of increasing y1po. l molding, thick strip, apply this forming sleeve FOR forms | KI t.rub with a large diameter, significantly reduce the wear of the working surface of the sleeve, improve the productivity of the mill by increasing the speed of molding.

At Voroshilovgrad. Plant vm. Yakubovky developed a pai bai design of the drawings and a prototype was made. The introduction of the Preferred Device is scheduled for the IV quarter of 1977 by the Ministry of Black Meteorology.

Claims (3)

1.Shevakin Yu. F. and others. Production of pipes. M., “Metallurgists, 1968, p. 350 2.AiBTOpcKoe USSR certificate № 3800381, 1КЛ. B 21 C 37 / G2, 197il. 3. Avtorokoe. Certificate of the USSR № 247899, cl. B 21 C 37/12, 1968. five Aa Cpuz.1