CN209035115U - A kind of novel surfacing roll - Google Patents

Abstract

The utility model provides a kind of novel surfacing roll, including matrix, has hole type roll groove on matrix, hole type roll groove includes the pass R arc of pass slot bottom, the sidewall of pass positioned at pass slot bottom two sides and connecting hole type groove bottom and the sidewall of pass；Successively heap is welded at least two layers of welding wire from the inside to the outside on pass slot bottom and pass R arc, and the welding wire hardness for being located at internal layer is less than the welding wire positioned at outer layer；Then heap is welded with welding wire on the sidewall of pass, minimum hardness of the welding wire hardness on the sidewall of pass not less than the welding wire of institute's built-up welding on pass slot bottom and pass R arc.The utility model can effectively improve the wear-resisting and impact resistance of roll, effectively improve the service life of roll pass and be convenient for pass machining, improve single slot steel transportation amount, effectively improve production efficiency and guarantee product surface quality.

Description

A kind of novel surfacing roll

Technical field

The utility model relates to steel bar production technical field more particularly to a kind of novel surfacing rolls.

Background technique

The excellent special steel product such as bearing steel, spring steel, middle high-alloy steel requires stringent, Rolling Production to surface and inherent quality It is higher to the quality requirement of roll in the process, especially roughing mills roll, by heavy reduction, large impact power and 1100 DEG C with On high temperature, therefore the problems such as roll often occurs being cracked, lose flesh, serious fire check, stocking surface is caused pitted skin, crackle etc. occur Serious quality problems need often to change roughing mill roll in production process, influence production efficiency.

Utility model content

Technical problem to be solved by the utility model is: in order to solve the deficiency of the prior art, the utility model provides one Kind can carry out layering built-up welding using various material welding wire on roll, effectively improve the service life of roll pass and convenient for pass Processing improves single slot steel transportation amount, effectively improves production efficiency and guarantee a kind of novel surfacing roll of product surface quality.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of novel surfacing roll, including matrix, There is hole type roll groove, the hole type roll groove includes pass slot bottom, positioned at the hole of pass slot bottom two sides on the matrix The pass R arc at type side wall and connecting hole type groove bottom and the sidewall of pass；On the pass slot bottom and pass R arc from the inside to the outside successively Heap is welded at least two layers of welding wire, and the welding wire hardness for being located at internal layer is less than the welding wire positioned at outer layer；On the sidewall of pass then Heap is welded with welding wire, and the welding wire hardness on the sidewall of pass is not less than the welding wire of institute's built-up welding on pass slot bottom and pass R arc most Small hardness.

Successively heap is welded with two layers of welding wire, two layers of welding wire difference from the inside to the outside on the pass slot bottom and pass R arc For the welding wire of the welding wire positioned at the 40-50HS hardness of internal layer and the 65-75 hardness positioned at outer layer.The welding wire hardness of internal layer is lower, It can merge convenient for carrying out welding with matrix, the welding wire hardness of outer layer is higher, then effectively increases the resistance to of pass slot bottom and pass R arc Hot, wear-resisting and impact resistance.

Heap is welded with the weldering with the welding wire same rigidity for being located at internal layer on pass slot bottom and pass R arc on the sidewall of pass Silk.Since the sidewall of pass only plays clamping rolled piece operation, it is not necessarily to higher hardness, the weldering compared with soft can be used on the sidewall of pass Silk, convenient for machining, effectively save cost.

Bottom built-up welding carries out bottoming built-up welding using the welding wire of slightly lower hardness, can merge convenient for carrying out welding with matrix, then It burn-ons in bottom heap and continues the welding wire of built-up welding high rigidity, then can effectively improve heat-resisting, the wear-resisting and impact resistance of pass.And side Wall built-up welding carries out built-up welding using the welding wire of slightly lower hardness, is only to play the effect of clamping rolled piece operation for side wall and design, Without excessively high mechanical performance, using the welding wire of slightly lower hardness, then it can effectively be convenient for mechanical process.

The utility model has the beneficial effects that a kind of novel surfacing roll provided by the utility model, can make on roll Layering built-up welding is carried out with various material welding wire, bottom built-up welding can be convenient for merging with matrix welding, and upper layer built-up welding is then working lining, can The wear-resisting and impact resistance for effectively improving roll effectively improves the service life of roll pass and convenient for pass machining, raising Single slot steel transportation amount, effectively improves production efficiency and guarantees product surface quality.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the structural schematic diagram of the utility model optimum embodiment.

1 in figure, pass slot bottom 2, pass R arc 3, the sidewall of pass.

Specific embodiment

The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram, Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.

A kind of novel surfacing roll as shown in Figure 1, is the optimum embodiment of the utility model, including matrix, on matrix With hole type roll groove, the hole type roll groove includes pass slot bottom 1, the sidewall of pass 2 positioned at 1 two sides of pass slot bottom and company Connect the pass R arc 3 of pass slot bottom 1 Yu the sidewall of pass 2.

Successively heap is welded with two layers of welding wire from the inside to the outside on pass slot bottom 1 and pass R arc 3.Two layers of welding wire is respectively position The welding wire of welding wire in the 40-50HS hardness of internal layer and the 65-75 hardness positioned at outer layer.The welding wire hardness of internal layer is lower, can be just It is merged in carrying out welding with matrix, the welding wire hardness of outer layer is higher, then effectively increases the resistance to of pass slot bottom 1 and pass R arc 3 Hot, wear-resisting and impact resistance.Heap is welded with and is located at internal layer on pass slot bottom 1 and pass R arc 3 on the sidewall of pass 2 The welding wire of welding wire same rigidity.Since the sidewall of pass 2 only plays clamping rolled piece operation, it is not necessarily to higher hardness, it can on the sidewall of pass 2 Using the welding wire compared with soft, convenient for machining, effectively save cost.

When carrying out roll pass built-up welding processing to roll, bottom built-up welding carries out bottoming heap using the welding wire of slightly lower hardness Weldering can merge convenient for carrying out welding with matrix, then burn-on in bottom heap and continue the welding wire of built-up welding high rigidity, then can effectively improve Heat-resisting, the wear-resisting and impact resistance of pass, effectively improves the mechanical performance of surfacing roll, prolongs the service life, and reduces and shuts down The maintenance and repair number of roll change.And side wall built-up welding carries out built-up welding using the welding wire of slightly lower hardness, is only to play clamping for side wall The effect of rolled piece operation and design, without excessively high mechanical performance, using the welding wire of slightly lower hardness, then can effectively be convenient for Mechanical process.

A kind of novel surfacing roll being designed in this way, can carry out layering built-up welding using various material welding wire on roll, just In pass machining, bottom built-up welding can be convenient for merging with matrix welding, and upper layer built-up welding is then working lining, can effectively improve the resistance to of roll Mill and impact resistance effectively improve the service life of roll pass, reduce the roller-changing in production process in roughing mills Maintenance, effectively improves production efficiency.The processing is simple for this surfacing roll, single slot steel transportation amount can be improved, single slot steel transportation amount is relative to biography System roll can be improved 1 times or more, and can guarantee special steel product surface quality, and this design can be in similar special steel bar It is promoted the use of on roughing mills on production line, it is applied widely.

It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims Property range.

Claims (3)

1. a kind of novel surfacing roll, including matrix, it is characterised in that: there is hole type roll groove on the matrix, it is described Hole type roll groove include pass slot bottom (1), be located at pass slot bottom (1) two sides the sidewall of pass (2) and connecting hole type groove bottom (1) and The pass R arc (3) of the sidewall of pass (2)；Successively heap is welded at least from the inside to the outside on the pass slot bottom (1) and pass R arc (3) Two layers of welding wire, and the welding wire hardness for being located at internal layer is less than the welding wire positioned at outer layer；Then heap is welded on the sidewall of pass (2) Silk is located at the welding wire hardness on the sidewall of pass (2) and is not less than the welding wire of institute's built-up welding on pass slot bottom (1) and pass R arc (3) most Small hardness.

2. a kind of novel surfacing roll as described in claim 1, it is characterised in that: the pass slot bottom (1) and pass R arc (3) successively heap is welded with two layers of welding wire from the inside to the outside on, and two layers of welding wire is respectively the welding wire for being located at the 40-50HS hardness of internal layer With the welding wire for the 65-75 hardness for being located at outer layer.

3. a kind of novel surfacing roll as claimed in claim 2, it is characterised in that: heap is welded on the sidewall of pass (2) With the welding wire for the welding wire same rigidity for being located at internal layer on pass slot bottom (1) and pass R arc (3).