CN203140439U

CN203140439U - Anti-corrosion rolling mill frame

Info

Publication number: CN203140439U
Application number: CN 201320006562
Authority: CN
Inventors: 刘永涛; 高扬
Original assignee: Angang Heavy Machinery Co Ltd
Current assignee: Angang Heavy Machinery Co Ltd
Priority date: 2013-01-07
Filing date: 2013-01-07
Publication date: 2013-08-21
Anticipated expiration: 2023-01-07

Abstract

The utility model relates to the field of rolling mill frames, in particular to an anti-corrosion rolling mill frame. The anti-corrosion rolling mill frame comprises a window provided with a sliding plate mounting surface and a lower backing plate mounting surface, and is characterized in that laser cladding layers are respectively arranged on the sliding plate mounting surface and the lower backing plate mounting surface, and each of the laser cladding layer is 1.5-2mm in thickness. Compared with the prior art, the anti-corruption rolling mill frame has the advantages that since a laser cladding technology is adopted on a sliding plate mounting part and a lower backing plate mounting part on two sides of the window of a hot rolling mill frame, and nickel base powder is melt and coated on the sliding plate mounting part and the lower backing plate mounting part, anti-corrosion function of a frame structure to spray phosphorus and water coolant can significantly improved, the frame structure can be more reasonable, and service life can be doubled.

Description

A kind of anticorrosive rolling-mill housing

Technical field

The utility model relates to the rolling-mill housing field, particularly relates to a kind of anticorrosive rolling-mill housing.

Background technology

Present domestic rolling-mill housing, particularly hot rolling mill frame, in use, be in for a long time among the erosion of spray phosphorus and cooling water, make the window both sides that slide plate position (B face) and installation lower bolster position (D face) are installed, see Fig. 1, use after 5～6 years, just damaged to not using.

Summary of the invention

The purpose of this utility model provides a kind of anticorrosive rolling-mill housing, and the commute corrosion location carries out preservative treatment, makes rack construction reasonable, and prolong service life.

For achieving the above object, the utility model is achieved through the following technical solutions:

A kind of anticorrosive rolling-mill housing comprises window, and window is provided with slide plate installed surface and lower bolster installed surface, is respectively equipped with laser cladding layer at slide plate installed surface and lower bolster installed surface.

Described laser melting coating bed thickness 1.5～2mm.

Compared with prior art, the beneficial effects of the utility model are:

By laser melting and coating technique is adopted in hot rolling mill framework window two sideskid installation positions and lower bolster installation position, with Ni-based pulvis cladding at this position, can obviously improve rack construction to the anticorrosive effect of spray phosphorus and cooling water, make the more reasonable structure of frame, prolong one times service life.

Description of drawings

Fig. 1 is rack construction of the rolling mill schematic diagram in the prior art;

Fig. 2 is structural representation behind the utility model laser melting coating;

Fig. 3 is the side view of Fig. 2.

Among the figure: 1-window 2-laser cladding layer

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further:

See Fig. 2 and Fig. 3, it is a kind of anticorrosive rolling-mill housing example structure schematic diagram of the utility model, comprise window 1, window 1 is provided with slide plate installed surface and lower bolster installed surface, be respectively equipped with laser cladding layer 2 at slide plate installed surface (calling the B face in the following text) and lower bolster installed surface (calling the D face in the following text), the cladding material is Ni-based (Ni25) pulvis.Laser cladding layer 2 thick 1.5～2mm.

Before the laser melting coating, earlier window is carried out semifinishing, window both sides B face and D face are pressed figure paper size deep processing 1.5mm, Ra6.3; Adopt all the other positions of boring and milling machine semifinishing then, single face all stays 3mm surplus, Ra6.3.

During laser melting coating, earlier B face and D face are done the MT flaw detection, standard is 2 grades of JB/T5000.14-2007; After qualified, adopt Ni-based (Ni25) pulvis, hardness is HB250, and B face and D face are carried out laser melting coating; Ground floor cladding thickness is 0.3mm; Second layer cladding thickness is 0.6mm; The 3rd layer of cladding thickness is 1mm; The 4th layer of cladding thickness is 1mm.

Behind the laser melting coating, frame is carried out fine finishining, frame is lain on the CNC milling machine workbench, press B face and A face centering, error is processed A face, B face, D face and other position, the thick laser cladding layer of minimum reservation 1.5mm on B face and the D face less than 0.1mm.

Claims

1. an anticorrosive rolling-mill housing comprises window, and window is provided with slide plate installed surface and lower bolster installed surface, it is characterized in that, is respectively equipped with laser cladding layer at slide plate installed surface and lower bolster installed surface.

2. a kind of anticorrosive rolling-mill housing according to claim 1 is characterized in that, described laser melting coating bed thickness 1.5～2mm.