CN201257583Y - Repairing layer of super large supporting roller - Google Patents

Abstract

The utility model belongs to the technical field of repair of ultra-large type supporting rollers, and particularly relates to a repairing layer of an ultra-large type supporting roller. The repairing layer is characterized in that a priming coat layer, a transition layer and a working layer are overlaid on the roller surface of the supporting roller in sequence. Compared with the prior art, the roller body of the supporting roller is primarily repaired by adopting the priming coat layer, a buffering layer with hardness and rigidity is obtained by adopting the transition layer, and the working layer ensures the firmness of the repairing layer of the supporting roller to meet the technical requirement of use of the roller surface.

Description

A kind of repair layer of ultra-large type backing roll

[technical field]

The utility model relates to ultra-large type backing roll recovery technique field, specifically a kind of repair layer of ultra-large type backing roll.

[background technology]

Industrial machinery is equipped in and moves the wearing and tearing and the corrosion that are caused under the condition of different medium is very important key subjects during certain world industry is produced.According to statistics, industrially developed country is because the loss frayed and that corrosion is caused of equipment and member almost reaches the 7%-10% of gross national product, adopt hard material and stiff dough technology can prevent to equip attrition and attack with member effectively, and can carry out reparative regeneration to the member that has damaged, this has remarkable economic efficiency and social benefit for making up economizing economy.

Large-scale cold and hot rolling mill has become the main flow in China steel rolling production worker technology, and backing roll is the large damageable spare parts in this production process.It only is example with the Baosteel, article 4, if hot continuous rolling, cold continuous rolling production line are by normal deterioration, estimate according to its output of steel and backing roll ton steel abrasion loss, year consumes more than 1,000 ton of backing roll, be equivalent to the backing roll of a substance more than 30 tons surplus in the of 30, calculate thus surplus consuming large and medium-sized backing roll national steel industry year reaches 300 piece, therefore, be significant at the build-up welding repair process Study on Technology exploitation of backing roll.

The built-up welding reparation of large-scale backing roll, in industrially developed country by the ground widespread usage, though China starts late, but development in recent years rapidly, large-scale hot-rolling supporting roll technology is repaired to built-up welding by big-and-middle-sized iron and steel enterprises such as some professional production enterprises of areas such as Liaoning, Jiangsu and Zhejiang Provinces, Shanghai, Tianjin, Hebei, Fujian and Baosteel, Anshan iron and steel plant, Xing Gang, comprise that technical equipment, technological process and resurfacing welding material have carried out many practices and research, but almost do not set foot in for ultra-large type backing roll reparative regeneration field.

At present, domestic large-tonnage backing roll is all external import as the backing roll of Φ 2100 * 3400, and its every end item sale price is about 1,000 ten thousand yuan, also need 3 years soon delivery date again, valency height not only, and time-consuming, if carry out reparative regeneration, repeatedly reuse original workpiece blank as much as possible, the part regeneration of scrapping or scrapping near size is increased the service life, then can reduce cost the saving cycle.

[summary of the invention]

The purpose of this utility model is to overcome the deficiencies in the prior art, is satisfied special requirement of repairing the ultra-large type backing roll, and the repair layer of a kind of built-up welding of design.

For achieving the above object, design a kind of repair layer of ultra-large type backing roll, it is characterized in that: backing roll roll surface built-up welding successively has prime coat, transition zone and working lining.

The utility model is compared with prior art, adopts the tentatively multiple flat backing roll body of roll of prime coat, adopts transition zone to obtain the cushion of hardness and rigidity, and working lining has guaranteed the fastness of backing roll repair layer to satisfy the specification requirement that roll surface uses.

[description of drawings]

Fig. 1 is the structural representation that the backing roll among the utility model embodiment is repaired overlay cladding.

Appointment Fig. 1 is a Figure of abstract.

Referring to Fig. 1,1 is prime coat; 2 is transition zone; 3 is working lining; 4 is backing roll, and wherein body of roll illustrated dimension is each overlay cladding design cold conditions size.

[specific embodiment]

Below the utility model is further described.

Backing roll 4 surface irregularities to be repaired, earlier at the whole surface overlaying one deck of body of roll prime coat 1, tentatively fill and lead up the air spots place, and then on prime coat 1 basis built-up welding one deck transition zone 2, play transitional function, again after built-up welding working lining 3 on transition zone 2 again, finish the reparation of backing roll, each overlay cladding will be noted the integral smoothness of relative roll surface size, and prime coat and transition zone size allow monolateral ± 1mm.

Claims (1)

1, a kind of repair layer of ultra-large type backing roll is characterized in that: backing roll (4) roll surface built-up welding successively has prime coat (1), transition zone (2) and working lining (3).

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