CN1142415A

CN1142415A - Repairing process for rollers

Info

Publication number: CN1142415A
Application number: CN 95111924
Authority: CN
Inventors: 史国山; 唐子威; 孙迪波
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-04
Filing date: 1995-08-04
Publication date: 1997-02-12

Abstract

A technology for repairing roller includes such steps as turning off a worn layer around the used roller, coating an adhesive layer on roller core, sleeving a prefabricated roller sleeve onto roller core and solidifying the adhesive layer. The repaired roller has the adventages of improved mechanical performance, long service life and low cost.

Description

A kind of repair process of roll

The invention belongs to the restorative procedure of roll, particularly a kind of roll restorative procedure with edge cover method.

In steel rolling is produced, because roll is the main processing component that directly contacts, forces rolled piece generation plastic deformation with rolled piece, it should bear bigger sliding speed of very big dynamic pressure and intermetallic and bigger bending stress, bear the bigger temperatures involved of amplitude of variation again, roll in use will constantly be worn, when roll wear will be repaired it because of not re-using after to a certain degree.The restorative procedure of roll generally is the process that adopts built-up welding at present, since the mechanical performance of layer etc. all be by different welding wires, solder flux and welding procedure satisfy, this has just proposed specific (special) requirements to the prescription of welding wire material, solder flux, the in enormous quantities reparation of roll is restricted, and no matter whole built-up welding still is local built-up welding, and crackle and caducous problem often appear in layer.Therefore, the deficiency of existing built up welding technique of restoring roller causes the roll machinery poor-performing after the reparation, in the service life of having limited roll, has strengthened production cost.

The purpose of this invention is to provide and a kind ofly can improve the mechanical performance be repaired roll, improve the roll repair process in its service life.

To achieve these goals, technical scheme of the present invention is: the useless roll that elder generation can not re-use experience wear, adopt the machine cut method roll cutting to be removed wearing layer along its outer surface, obtain a roller core, on roller core, put a roller shell again, adopt retaining rubber stick fixing to be connected between roller core and roller shell, just obtain the new roll after the reparation.

In order to guarantee to repair the mechanical performance of back roll, the alloy material that roller shell should be selected to have high strength, high rigidity, high-wear resistance is manufactured, and perhaps selects to be fit to the roller shell that the needs material is manufactured according to the concrete rolling material of roll.

The present invention compares with existing built up welding technique of restoring roller, because the skin of the roll after repairing is a roller shell, roller shell is by intensity, hardness and anti-wear performance material are preferably manufactured, or select for use the material that can satisfy rolling technological requirement to manufacture according to rolling requirement, this just can make the roll that adopts this method to repair more even than the roll hardness of overlaying process reparation, wearability is better, improved the mechanical performance that is repaired roll, more can satisfy the requirement of rolling mill practice, improved the service life of roll, also improved the operating efficiency of milling train simultaneously and reduced production cost.

Describe the present invention in detail below in conjunction with accompanying drawing:

Fig. 1: the roller core schematic diagram that useless roll obtains after processing.

Fig. 2: the axial cutaway view of the roll after the reparation.

Roll restorative procedure of the present invention is: the useless roll 1 that will repair earlier, carry out machine cut and machine away damaged layer along its outer surface, obtain a roller core 2, on roller core 2, put a roller shell of manufacturing in advance 3 again, 3 of roller core 2 and roller shells are equipped with an adhesive layer 4, after being heating and curing, roller core 2 and roller shell 3 fixings are linked together.

Saidly make ready-made roller shell 3 in advance, its external diameter is greater than the external diameter 0.5-1.0cm of former useless roll 1, this roller shell 3 is enclosed within after roller core 2 first-class adhesive solidifications, roller core 2 and roller shell 3 firm fixings link together, carry out machine cut again, make the Surface Machining of the roll that has roller shell 3 arrive satisfactory fineness, and make the diameter of this roll identical with the diameter of former useless roll 1.

The adhesive layer 4 that is equipped with between roller core 2 and the roller shell 3, be [to produce a kind of being called " happy safe retaining rubber 620 " by happy safe (China) anaerobic sealer Co., Ltd, CompanyAddress: No. 12, Song Hua River, economic and technological development zone, Yantai, Shandong road] anaerobic adhesive floor 4, respectively at the inner surface of the outer surface of roller core 2 and roller shell 3 this adhesive of brushing one deck equably, treat to solidify at normal temperatures 24 hours after roller shell 3 is enclosed within on the roller core 2, under 90-100 ℃ temperature, be heating and curing 4 hours again.

The roll that the inventive method is repaired when may wear to can not re-use the time, can machine away roller shell, again the roller shell that more renews again can obtain the new roll of repairing again, therefore, a roller core can repeat repeatedly to use, and so just can save raw material and expense.

Claims

1, a kind of repair process of roll, it is characterized in that: the useless roll (1) that will repair carries out machine cut and machines away the damage circular layer along its outer surface, obtain a roller core (2), on roller core (2), put one again and make ready-made roller shell (3) in advance, be equipped with an adhesive layer (4) between roller core (2) and roller shell (3), normal temperature and be heating and curing after, roller core (2) and roller shell (3) fixing are linked together.

2, the repair process of a kind of roll according to claim 1, it is characterized in that: the said roller shell (3) that is enclosed within on the roller core (2), its external diameter is greater than the external diameter 0.5-1cm of former useless roll (1), this roller shell (3) is enclosed within on the roller core (2), after treating adhesive solidification, cut again, make its surface have satisfactory fineness, and make the diameter of this roll identical with the diameter of former useless roll (1).

3, the repair process of a kind of roll according to claim 1, it is characterized in that: the adhesive layer (4) between said roller core (2) and the roller shell (3), it is the anaerobic adhesive layer (4) of a kind of being called " happy safe retaining rubber 620 ", evenly be coated with at the inner surface of the outer surface of roller core (2) and roller shell (3) respectively and brush this adhesive, after treating that roller shell (3) is enclosed within on the roller core (2), solidified at normal temperatures 24 hours, and under 90-100 ℃ temperature, be heating and curing 4 hours again.