RU2562568C2 - Installation for vacuum ion-plasma application of coatings - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building, and can be used for ion-plasma hardening of the tool with dimensions exceeding overall dimensions of the unit work chamber. The unit contains vacuum chamber, electric arc evaporator with cathode assemblies, installed with possibility of rotation, and item rotation gear. Besides, it is equipped with elongating cylinders, fastening devices, Teflon guides and ring, at that the holes are made on the top and bottom panels of the vacuum chamber, on them the elongating cylinders are secured with possibility of installation of the item end parts. The fastening devices are made with possibility of items vertical installation in them and longitudinal movement in the Teflon guides ensuring electric insulation from the vacuum chamber, and the ring is installed with possibility of location on the item and engagement with shaft of the rotating gear.

EFFECT: invention extends range of items hardened in the ion-plasma units.

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Description

The invention relates primarily to mechanical engineering and can be used for ion-plasma hardening of a tool with dimensions exceeding the dimensions of the working chamber of the installation.

A known installation for complex ion-plasma treatment, which contains a vacuum chamber, an electric arc source of plasma in the form located in the vacuum chamber, at least one long electrode, the holder of products with an insulated current supply, an electron emitter made in the form of an emission chamber, inside of which is installed a long linear cathode of an electron emitter in communication with a vacuum chamber through a perforated partition, the openings of which are located along the longitudinal axis of the cathode cathode (RF Patent N 2453629, IPC С23С 14/30, prior, dated June 15, 2010, published on June 20, 2012).

However, the known installation has significant dimensions, poorly adapted for hardening small-sized products.

The well-known serial installation of vacuum ion-plasma spraying NNV-6.6-I1, which consists of a body, a door, an electric arc evaporator, a water cooling system, a vacuum system, a rotation mechanism, a base and an electrical part (Installation of an ion-plasma chamber vacuum NNV-6.6-I1 . Instruction manual.), Which is taken as a prototype.

However, the known installation, adopted as a prototype, does not allow to strengthen lengthy products with dimensions exceeding the dimensions of the working chamber.

The technical problem to be solved by the claimed invention is directed is the expansion of the range of hardened parts in serial ion-plasma installations of the NNV type.

The stated technical problem is solved in that the installation for vacuum ion-plasma coating, containing a vacuum chamber, an electric arc evaporator with cathode assemblies and a rotation mechanism of the product, according to the proposed invention is equipped with extension cylinders, fasteners, Teflon guides and a ring, while on the top and openings are made on the lower panels of the vacuum chamber, on which extension cylinders are fixed with the possibility of placing the end parts of the product in them, fixing devices CTBA configured to vertical loading the article and the longitudinal displacement in the vacuum chamber from a non-conducting Teflon guide, and the ring is set to be positioned on the product and engagement with the shaft rotation mechanism products, and the cathode assemblies are arranged to turn.

The technical result consists in expanding the range of hardened products in ion-plasma installations.

This design allows you to strengthen long products, such as broaches, in ion-plasma installations with dimensions of a vacuum chamber smaller than the size of the hardened product.

In FIG. 1 shows the proposed installation diagram. Holes are made in the lower and upper panels of the vacuum chamber 6, on which the extension cylinders 1 and 11 are fixed. The fastening devices 3, 4, 9 and 10 are made with the possibility of vertical installation of the hardened product 8 in them and longitudinal movement in the Teflon guides 2 insulating from the vacuum chamber and 12. The ring 5 is installed with the possibility of placement on the product and engagement with the disk 15, which is mounted on the shaft 14. When the shaft 14 is rotated, the disk 15 is engaged with the ring 5, which provides a rotary and reciprocating the movement of the hardened product, and the stroke of the product is determined by the angle of inclination of the ring. The cathode nodes 7 and 13 are deployed using transition flanges (Fig. 2) so that the plasma flows are evenly distributed over the hardened surface.

Installation works as follows. The hardenable lengthy product 8 is placed in the vacuum chamber 6 so that its end parts are located in the extension cylinders 1 and 13. Then the product is fixed in the guides 2 and 12 by means of fastening devices 3, 4, 9, 10. A ring 5 is fixed on the hardened product which engages with the disk 15 of the shaft 14. Vacuum the working chamber and actuate the shaft with the disk, which engages with the ring 5 and transmits rotational and reciprocating motion to the hardened product. Thus, uniform coating is achieved over the entire cutting surface of the hardenable product, with the exception of its end elements that do not require hardening.

Using the proposed installation, hardening of a long broach 900 mm long (working part 600 mm) was hardened, the results obtained indicate that the coating thickness on the calibrating teeth does not exceed the accuracy tolerance limit (2 μm), while the coating is synthesized on working teeth sufficient thickness (4-5 microns).

The proposed device allows to strengthen long products with dimensions exceeding the dimensions of the working chamber of the ion-plasma installation; can be made using means known in the art. Therefore, the proposed device has industrial applicability.

The use of the proposed device leads to the expansion of the range of hardened parts in serial ion-plasma installations.

Claims (1)

Installation for vacuum ion-plasma coating containing a vacuum chamber, an electric arc evaporator with cathode assemblies and a rotation mechanism of the product, characterized in that it is equipped with extension cylinders, fasteners, teflon guides and a ring, while on the upper and lower panels of the vacuum chamber are made holes on which extending cylinders are fixed with the possibility of placing the end parts of the product in them, mounting devices are made with the possibility of vertical installation in them and part and longitudinal movement in the current-insulating Teflon guides from the vacuum chamber, and the ring is installed with the possibility of placement on the product and engagement with the shaft of the product rotation mechanism, and the cathode nodes are installed with the possibility of a turn.

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