SU703241A1 - Foil manufacturing method - Google Patents

Description

(54) METHOD FOR MAKING FOIL

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The invention relates to the processing of metals by pressure, and more specifically to the production of foil and tape with a thickness of less than 0.5 mm.

A known method of making foil from round billets includes cutting round billets into disks, cold cutting of a band billet with a dG1Cov cutter with transverse feeding of the cutter, winding up the band billet into a roll, and subsequent cold rolling of the billet at mill ij.

In order to eliminate metal waste into shavings when cutting a band blank from long blanks, cold cutting of the band blank is carried out with a longitudinal feed of the cutter with its inclination. cutting edge at an angle of 5-12 to the axis of the workpiece.

To eliminate the crescent of the ribbon blanks, it is cut when the cutting edge of the tool is inclined at an angle of 5-10 to the horizontal plane.

FIG. 1 shows a scheme for producing a tape blank according to the proposed method; in fig. 2 - the same top view; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a view along arrow B in FIG. 2,

PRI me R. On a heavy lathe grinding machine model RT-5ОZ, ingot 1 was cut with a diameter of 500 mm, length 1000 mm from a titanium alloy with a cutter 2 into a tape blank 3 with a width of 7O mm and a thickness of 0.4 mm. The material of the cutter was used high-speed steel grade R6M5.

The band was cold cut, the workpieces were made with a longitudinal feed of the cutter 2 with its cutting edge tilted at an angle of 10 to the workpiece axis (main angle in plan V). Moreover, the cutting edge was also tilted to the horizontal plane at an angle of 8 (Negative angle).

Cutting was done with a cutter with the following geometrical parameters.

perpendicular angle T -5O, rake angle faskn-3f SS -5, clearance angle oL -6, chamfer width f - -0.1 mm. The cutting speed was 5 m / min. The value of the longitudinal feed cutter S prod. taken equal to 1.5 mm per 1 turn of the workpiece. . Tape blank 3 was wound into a roll and annealed for 1 h at a temperature of 580 C in vacuum with a residual air pressure of 10 mm Hg. Art.

The annealed strip billet was rolled in a cold state on a six-mill mill with a working roll diameter of 130 mm to a thickness of 0.19 mm in 14 passes, after which the resulting tape was again annealed for 1.5 hours at the same temperature and rolled also in a cold condition to a thickness 0.13. mm for 7 passes. The third annealing of the ribbon blank was carried out for 5.5 h and rolled up to a thickness of 0.08 mm in 8 passes.

The techno-economic effect of the method is to ensure waste-free cutting of a strip billet from a round billet with a reduction in metal consumption in the form of chips by 13-2%. In addition, the proposed method provides the stability of the quality of the foil on the mechanical properties.

Claims (2)

1. A method of making foil from round blanks, including cold cutting of a band blank with a chisel to cold rolling it on a mill, in order to exclude metal waste into chips when cutting band blanks lengthy blanks; cutting of the band blank is carried out with a longitudinal feed of the cutter with its cutting edge tilted at an angle of 5-12 to the axis of the blank. 2. A method according to claim 1, characterized in that, in order to eliminate the sickle-shapedness of the tape blank, it is cut when the cutting edge of the rod is inclined at an angle of 5-10 to the horizontal plane. Sources of information taken into account in the examination 1. Journal of Mechanical Engineering, vol. 4, 1974, p. 68, 4B435. pus.i A-A Type B Fig