CN210498271U - Special grooved die for producing pilger mill roller - Google Patents

Abstract

The utility model relates to the technical field of a grooved die, in particular to a grooved die special for producing a roller of a periodical pipe mill, which comprises a top box, an upper roller die, a lower roller die, a bottom box and a bottom box seat which are arranged from top to bottom in sequence; a bottom box is fixedly arranged on the bottom box seat, and an upper roller die and a lower roller die which are spliced are respectively fixed at the upper end of the bottom box; the top box is arranged above the upper roller die; arc grooves are formed in the inner wall of the upper roller die and the inner wall of the lower roller die along the circumferential direction. The grooved die special for producing the pilger mill roller saves raw materials, increases pass density, reduces processing time and processing amount, saves production cost and improves production economic benefits.

Description

Special grooved die for producing pilger mill roller

Technical Field

The utility model belongs to the technical field of the technique of grooved die utensil and specifically relates to a grooved die utensil of production cycle pipe mill roll is exclusively used in.

Background

As the outer diameter, the wall thickness, the steel grade and the demand of the seamless steel pipes used in various industries are changed in a large range, the production of the domestic seamless steel pipes with the largest diameter is realized by a pilger mill. The working principle of the pilger mill is designed based on the assumption that deformation joint stages of each pass in steel pipe elongation rolling are concentrated in the same rolling groove. When the roller rolls for one circle, the tube blank is fed into a small section to be forged and rolled by a rolling die, and the like to form a pierced billet. When the next feeding rolling is carried out and the turning is carried out by 90 ℃, a pierced billet is formed by the periodic rolling. The roll pass used by the periodical pipe mill is hyperbolic, and the difference between the upper and lower hole diameters and the hole depth is large, so that the pipe mill is similar to a crankshaft. If the roller is perforated by a flat roller, not only is a great deal of metal material wasted, but also a loose area is difficult to avoid for the basic structure of the deep hole pattern, the roller is quickly abraded in the forging and rolling operation, the service life of the roller is directly influenced, and the production cost of the rolled pipe is further increased.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, the grooved die special for producing the pilger mill roller is provided, so that the raw materials are saved, the pass density is increased, the processing time and the processing amount are reduced, the production cost is saved, and the production economic benefit is improved.

The utility model provides a technical scheme that its technical problem adopted is: a special grooved die for producing a pilger roller of a pilger mill comprises a top box, an upper roller die, a lower roller die, a bottom box and a bottom box seat which are sequentially arranged from top to bottom; a bottom box is fixedly arranged on the bottom box seat, and an upper roller die and a lower roller die which are spliced are respectively fixed at the upper end of the bottom box; the top box is arranged above the upper roller die; arc grooves are formed in the inner wall of the upper roller die and the inner wall of the lower roller die along the circumferential direction.

Further, in the above technical solution, the inner arc-shaped groove of the upper roller die and the inner arc-shaped groove of the lower roller die are spliced to form a reducing annular notch.

Further, in the above technical solution, a mud chip for adjusting shrinkage is further disposed between the upper roller die and the lower roller die.

Further, in the above technical solution, the outer walls of the upper roller die and the lower roller die are both fixedly provided with ear pieces.

Further, in the above technical solution, a suspension post is further vertically disposed between the ear flaps.

Further, in the above technical solution, an upper riser is provided at the upper end of the top box.

Further, in the above technical solution, the top box hanging column is also vertically arranged on the side wall of the top box.

Further, in the above technical solution, the sidewall of the bottom box is further vertically provided with bottom box lugs and bottom box hanging posts.

The utility model has the advantages that: the utility model provides a pair of be exclusively used in trough of belt mould of production cycle pipe mill roll practices thrift raw and other materials, increases the pass density, reduces process time and work load, practices thrift manufacturing cost, improves production economic benefits.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the structure of the upper roll mold of FIG. 1;

fig. 3 is a schematic view of the structure of the lower roll mold of fig. 1.

The reference numbers in the drawings are: 1. the device comprises a top box, 2, an upper roller die, 3, a lower roller die, 4, a bottom box, 5, a bottom box seat, 6, an arc-shaped groove, 7, a mud chip, 8, an ear piece, 9, a hanging column, 10, an upper riser, 11, a top box hanging column, 12, a bottom box ear piece, 13 and a bottom box hanging column.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2 and 3, a grooved die dedicated for producing a pilger roll of a pilger mill is shown, which comprises a top box 1, an upper roll die 2, a lower roll die 3, a bottom box 4 and a bottom box base 5 which are arranged from top to bottom in sequence; a bottom box 4 is fixedly arranged on the bottom box base 5, and an upper roller die 2 and a lower roller die 3 which are spliced are respectively fixed at the upper end of the bottom box 4; the top box 1 is arranged above the upper roller die 2; arc-shaped grooves 6 are formed in the inner wall of the upper roller die 2 and the inner wall of the lower roller die 3 along the circumferential direction.

Wherein, arc groove 6 in going up roller die 2 and arc groove 6 amalgamation formation reducing annular notch in the roller die 3 down. A mud chip 7 for adjusting shrinkage is also arranged between the upper roller die 2 and the lower roller die 3. Ear climbers 8 are fixedly arranged on the outer wall of the upper roller die 2 and the outer wall of the lower roller die 3. A hanging post 9 is also vertically arranged between the ear climbing pieces 8. The upper end of the top box 1 is provided with an upper riser 10. The side wall of the top box 1 is also vertically provided with a top box hanging column 11. The side wall of the bottom box 4 is also vertically provided with a bottom box ear climbing 12 and a bottom box hanging post 13.

The grooved die special for producing the pilger mill roller has the following advantages relative to the traditional roller die: firstly, saving nearly one fourth of metal materials; secondly, the density of the metal material in the hole pattern is increased by accelerating solidification and cooling, and a tissue loose area is avoided; thirdly, the wear resistance and the forging and rolling toughness of the roller during forging and rolling are improved, and the service life of the roller is prolonged; fourthly, the processing time and the processing amount of the roller are reduced, a large amount of roller use cost can be saved, and the production benefit of enterprises is improved; and fifthly, designing the die by adopting a splicing design of an upper roller die and a lower roller die, hanging 12.5mm of sand on the inner wall in the actual production process, then brushing zircon powder coating, drying in the shade for 24-48 hours, and baking in a furnace for later use.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a be exclusively used in groove mould of production cycle pipe mill roll which characterized in that: comprises a top box, an upper roller die, a lower roller die, a bottom box and a bottom box seat which are arranged from top to bottom in sequence; a bottom box is fixedly arranged on the bottom box seat, and an upper roller die and a lower roller die which are spliced are respectively fixed at the upper end of the bottom box; the top box is arranged above the upper roller die; arc grooves are formed in the inner wall of the upper roller die and the inner wall of the lower roller die along the circumferential direction.

2. The grooved die set forth in claim 1, wherein: the arc-shaped groove in the upper roller die and the arc-shaped groove in the lower roller die are spliced to form a reducing annular notch.

3. The grooved die set forth in claim 1, wherein: and a mud chip for adjusting shrinkage is arranged between the upper roller die and the lower roller die.

4. The grooved die set forth in claim 1, wherein: the outer walls of the upper roller die and the lower roller die are fixedly provided with ear pieces.

5. The grooved die set forth in claim 4, wherein: and a hanging column is vertically arranged between the ear climbers.

6. The grooved die set forth in claim 1, wherein: the upper end of the top box is provided with an upper riser.

7. The grooved die set forth in claim 1, wherein: and a top box hanging column is also vertically arranged on the side wall of the top box.

8. The grooved die set forth in claim 1, wherein: and the side wall of the bottom box is also vertically provided with a bottom box ear climbing column and a bottom box hanging column.

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