SU380723A1 - DEVICE FOR HARDENING AND EDGING LONG-DIMENSIONAL - Google Patents

Description

one

The invention relates to the field of mechanical engineering and can be used in thermal workshops.

A quenching device is known that includes a fixed stop, a lateral movable clamp, a lower fixed plate and a vertical movable clamp, whose working surfaces have corrugations and channels for supplying a cooling fluid. However, in the quenching process, the workpiece is washed by the coolant not simultaneously from all sides and not evenly both along the perimeter and along the length (the cooling fluid flows through the holes, where the least resistance). As a result, residual deformation appears after quenching.

In the proposed device, jacket sprayers (for coolant) are mounted in the lower fixed plate and in the vertical movable clamp; moreover, the vertical movable clamp has tubes whose upper edges are at the same level and elevated relative to the bottom of the sprayer bath.

FIG. 1 shows a device for dressing and tempering products; in fig. 2 - the same view in 1plan.

The device consists of a lower fixed plate /, inside which is mounted a scraper sprayer 2 with openings, a vertical movable prilchim 3, inside of which there is a shirt sprayer 4 with a system of tubes 5 with openings, the upper edges of which are flush and raised relative to the bottom bath sprayer, fixed stop 6 and side rolling clamp 7.

On the working surfaces of the sprayers 2 and 4, grooves 8 are cut into two mutually perpendicular planes, the axes of which intersect with the axes of the holes. Inside the bottom plate / there are two ejector 9. The device is enclosed in a casing 10. On the working surfaces of the stop 6 and the lateral movable clamp 7. Grooves 11 are cut (only in one plane). Editing and quenching are performed as follows

in a way.

Preheated to the desired temperature, the product (for example, torsion) is placed on the lower fixed plate, pressed along the entire length of the vertical movable clamp 3, leaving a gap between the element to be processed and clamp 3 two millimeters. When a given clearance is reached, an element is applied over the entire surface with a lateral mobile clamp 7 to the fixed stop 6, then finally

They are pressed with a vertical movable clamp 3. After the final clamping, a cooling fluid is supplied under a pressure of 2-3 atm for 3-4 minutes to all planes through holes and grooves. The cooling liquid, which leaks out of the holes under pressure, flows through the grooves and evenly cools the workpiece from all sides, quenches, and then merges into the workshop highway. After 3-4 minutes of exposure, the vertical and side clamps are retracted. The product is ejected from the bottom plate by the ejector, and the cooling medium is prevented for 20-30 seconds from blocking the holes and ditches in the scale. disconnect. This ends the cycle.

Subject invention

A device for quenching and straightening long products, comprising a bottom, fixed plate and vertical clamp, fixed stop and side movable clamp, characterized in that, in order to simultaneously supply coolant and evenly distribute it over the entire surface of the workpiece, the | Lower fixed plate and in the vertical clamp there are jacketed sprayers mounted, which are developed unfolded along the length of the product being processed, moreover, the vertical clamp has a system of tubes, the upper edges of which are located placed on the same level and raised relative to the bottom of the sprayer bath.

FIG. 2