CN106312072A

CN106312072A - Rollers for powdery strip material and rolling method thereof

Info

Publication number: CN106312072A
Application number: CN201510368715.7A
Authority: CN
Inventors: 廖相巍; 黄玉平; 贾吉祥; 尚德礼; 康磊; 彭春霖; 白云波; 杨勇; 纪向军; 高扬
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2015-06-26
Filing date: 2015-06-26
Publication date: 2017-01-11

Abstract

The invention provides rollers for a powdery strip material and a rolling method thereof. A rolling groove is formed in the middle part of a roller body of each roller. The width of each rolling groove is equal to that of the powdery strip material to be rolled. The depth of each rolling groove is one-second of the thickness of the powdery strip material to be rolled. The section of a hopper is a cone of which the lower portion is in an arc shape. The radius of the arc of the lower portion is equal to that of the rolling groove of each roller. The width of the hopper is equal to that of each rolling groove. After the upper roller and the lower roller are assembled in place, the lower portion of the hopper is stretched into the hole grooves of the upper roller and the lower roller, and the arc of the lower portion of the hopper is made to be attached to the surfaces of the rolling grooves of the rollers; metal powder is added into the hopper, the rollers are started to conduct rolling, and then the powdery strip material with tidy edges and a compact structure can be obtained. The strip material rolled through the method has tidy edges and is compact in structure, and edge trimming is not needed; and accordingly, edge trimming losses can be reduced, the processing cost can be lowered, and the rolling yield of the powdery strip material can be remarkably increased.

Description

A kind of powder band roll and milling method thereof

Technical field

The invention belongs to pressure processing technology field, particularly relate to a kind of powder strip-rolling roll and milling method thereof.

Background technology

The process of powder band roll forming is that by rolling continuously between two rotary rollers, metal dust is rolled into cause relatively Close Strip.At present, industry all use diameter constant face straight barrel cylindrical rolls directly.Owing to roll is straight barrel, rolling During, the narrow limit, both sides of band is in unconfined open state, and the metal dust rolled flows according to law of minimum resistance, So the band using the roll of this straight barrel to roll out, have that edge is uneven, bulge and a problem of tissue looseness.Thus must Trimming process must be carried out, not only increase various consumption and processing cost, and significantly reduce the lumber recovery of band.To this end, People have done multiple trial, but there is no effective method at present.

Summary of the invention

It is desirable to provide one can ensure to roll, rear powder strip side portion is neat and dense structure, it is not necessary to trimming, thus reduces and cut Limit loss and processing cost, improve powder band roll and the milling method thereof of lumber recovery.

To this end, the solution that the present invention is taked is:

A kind of powder band roll, it is characterised in that be provided with groove at roll barrel mid portion, the width of groove with to roll The powder strip width of system is equal, and the degree of depth is the 1/2 of powder thickness of strip to be rolled.

The described width of groove is 100～1000mm, and the degree of depth is 1～5mm.

The milling method of a kind of powder band, its concrete grammar and step be:

1, roll is prepared: make roll according to the dimensions of band, the hole slot that after making pressing, two grooves of top and bottom rolls are formed Highly equal to the thickness of band, the width of groove is equal to the width of band；

2, hopper is made: hopper section is the bottom taper with circular arc, and bottom arc radius is equal with the groove radius of roll, Hopper width is identical with the width of groove；

3, assemble: top and bottom rolls assembles after putting in place, is stretched into the bottom of hopper in the hole slot of top and bottom rolls, and make hopper bottom circle Arc is fitted with roll groove surface；

4, to hopper add metal powder material, and start roll start rolling；

5, control roll rotational speed than straight barrel rolling reduce by 1%～5%, groove work surface rotational line speed controlling 20～40mm/s, Roll edge is neat and the powder band of dense structure.

The invention have the benefit that

The present invention is simple and practical, it is simple to implements and operates, on roll strength without big impact, the strip side portion rolled out neat and Fine and close, it is not necessary to carry out trimming, thus trim losses can be reduced, reduce processing cost, significantly improve the lumber recovery of powder band.

Accompanying drawing explanation

Fig. 1 is powder band roll schematic diagram；

Fig. 2 is hopper front view；

Fig. 3 is hopper left view；

Fig. 4 is roll and hopper installment state schematic diagram.

In figure: roll 1, groove 2, hopper 3, circular arc 4, powder sheet material 5.

Detailed description of the invention

As seen from Figure 1, powder band roll 1 of the present invention, is to be machined with groove 2, groove at the body of roll mid portion of roll 1 The width of 2 is equal with the width of powder band 5 to be rolled, and the degree of depth is the 1/2 of powder band 5 thickness to be rolled.

Fig. 2,3 displays, hopper 3 entirety is flattened elastic, and section is big upper and lower small mouth, and bottom is with the taper of circular arc 4, Bottom circular arc 4 radius is equal with groove 2 radius of roll 1, and hopper 3 width is identical with groove 2.

Fig. 4 is roll 1 and hopper 3 installment state schematic diagram, and top and bottom rolls 1 shape is identical with dimensions.After assembling puts in place, The bottom of hopper 3 stretch into top and bottom rolls 1 formed hole slot in, groove 2 surface of the bottom circular arc of hopper 3 and roll 1 Fit tightly.

Embodiment 1:

Rolling specs is 350 × 10mm.

1, roll 1 is made: groove 2 degree of depth is 5mm, width is 350mm, roll 1 radius 150mm.

2, hopper 3 is made: width is 350mm, and bottom circular arc 4 radius is 150mm.

3, assembling powder rolls, the bottom of hopper 3 is stretched in the hole slot of top and bottom rolls 1 composition.

4, add metal powder material to hopper 3, and start roll 1, start rolling.

5, roll 1 velocity of rotation 30mm/s, is compressed in the coffin of all round closure that powder 3 is formed at groove 2, To the powder band 5 that edge is neat and fine and close.

Embodiment 2:

Rolling specs is 300 × 8mm.

1, roll 1 is made: groove 2 degree of depth is 4mm, width is 300mm, roll 1 radius 135mm.

2, hopper 3 is made: width is 300mm, and circular arc 4 radius of bottom is 135mm.

4, add metal powder material to hopper 3, and start roll 1, start rolling.

5, roll rotation speed 27mm/s, powder is compressed in the enclosing square space that groove 2 is formed, is obtained edge neat And the powder band 5 of densification.

Claims

1. a powder band roll, it is characterised in that be provided with groove at roll barrel mid portion, roll Well width is equal with powder strip width to be rolled, and the degree of depth is powder thickness of strip to be rolled 1/2。

Powder band roll the most according to claim 1, it is characterised in that the described width of groove is 100～1000mm, the degree of depth is 1～5mm.

3. apply the milling method of powder band roll described in claim 1 for one kind, it is characterised in that tool Body method and step be:

(1) prepare roll: make roll according to the dimensions of band, make after pressing two of top and bottom rolls The hole slot height that groove is formed is equal to the thickness of band, and the width of groove is equal to the width of band；

(2) hopper is made: hopper section is the bottom taper with circular arc, bottom arc radius and roll Groove radius is equal, and hopper width is identical with the width of groove；

(3) assemble: top and bottom rolls assembles after putting in place, is stretched into the bottom of hopper in the hole slot of top and bottom rolls, And make hopper bottom circular arc fit with roll groove surface；

(4) to hopper add metal powder material, and start roll start rolling；

(5) control roll rotational speed and reduce by 1%～5% than straight barrel rolling, groove work surface rotational line speed controlling 20～40mm/s, roll edge is neat and the powder band of dense structure.