CN1721097A

CN1721097A - Hot pressing process for steel sheet rolling wheel

Info

Publication number: CN1721097A
Application number: CN 200510040207
Authority: CN
Inventors: 刁义元; 潘俊华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-24
Filing date: 2005-05-24
Publication date: 2006-01-18
Anticipated expiration: 2025-05-24
Also published as: CN100335194C

Abstract

This invention concerns steel plate roller hot pressing technique. Roll the steel plate into cylinder shape, weld into steel pipe, or use seamless steel pipe; heat locally to one end (A) to 850~900Deg, hot press to horn shape by enlarging mould on pressing machine; heat locally to one end (B) to 850~900Deg, hot press to drum shape stepped by enlarging mould, reducing mould and forming mould, wherein, take the forming process within three minutes after enlarging. The invention is used to the process for steel plate roller assembled on ship with simple operation and low cost, ensures wall thickness even without cockled edge, decreases welding deformation and disadvantage effect of stress, and prolongs service life.

Description

Hot pressing process for steel sheet rolling wheel

Technical field

The present invention relates to a kind of heat pressure forming process of metalwork pressure processing method, especially steel sheet rolling wheel.

Background technology

Steel sheet rolling wheel is boats and ships a kind of special purpose parts that mooring is used when stopping, and is positioned at fore, stern and the ship side place of ship, and its planform and performance indications should meet relevant criterion.Existing steel sheet rolling wheel is will to make by rotary pressing processing after steel plate cutting, reel, the welding earlier again, and its shortcoming is that equipment investment is big, to workman's specification requirement height, especially behind the mould pressing, the roller wall unevenness is even, and the limit creases easily, often do not reach standard-required, also be affected service life.Recently, have manufacturer to adopt the processing of die forming method, promptly earlier with roller in two, behind die forming, again to being welded into integral body, but welding deformation that the twice weld seam causes and stress decrease the precision of roller and intensity.

Summary of the invention

The technical problem to be solved in the present invention is the weak point that overcomes existing steel sheet rolling wheel manufacture method, provides that a kind of input is little, cost is low, simple to operate, can guarantee the hot pressing process for steel sheet rolling wheel that product meets standard, increases the service life.

Technical scheme of the present invention is: hot pressing process for steel sheet rolling wheel is that steel plate is rolled into tubular, be welded into steel pipe, press forming again, improvements are earlier to an end (A end) local heat to 850 of steel pipe ℃～900 ℃ in the pressing process, on forcing press, be hot pressed into horn-like by flaring die, to the other end (B end) local heat to 850 of steel pipe ℃～900 ℃, on forcing press, be hot pressed into drum type step by step by flaring die, reducing die, finishing die successively again.

The local heat of above-mentioned steel pipe A, B end is that the position that respectively the steel pipe two ends need be shaped is put into salt bath furnace and heated; Before steel pipe B end carried out enlarging, reducing processing, local heat to 850 ℃～900 ℃ respectively, reducing is processed and is formed mold pressing processing in back 3 minutes.

Adopt method hot pressing processing steel sheet rolling wheel provided by the invention to have following remarkable advantage:

1, equipment needed thereby is less demanding, drops into for a short time, simple to operate, thereby cost is low;

2, with steel pipe integral formula substep hot forming, guarantee even, the wrinkle resistant limit of roller wall thickness, meet standard-required, improve yield rate;

3, steel pipe welds before hot pressing, and weld seam is only arranged one, reduces the adverse effect of welding deformation and stress, improves product precision and intensity, increases the service life;

4, the inventive method also has obvious superiority for be processed into steel sheet rolling wheel with seamless steel pipe.

Description of drawings

Fig. 1 is a steel sheet rolling wheel blank schematic diagram;

Fig. 2 is roller A end enlarging processing schematic diagram;

Fig. 3 is roller B end enlarging processing schematic diagram;

Fig. 4 is roller B end reducing processing schematic diagram;

Fig. 5 processes schematic diagram for roller B end is shaped.

The specific embodiment

Consult accompanying drawing,, be welded into steel pipe, become roller blank 1 (Fig. 1) being rolled into tubular after the steel plate cutting.Earlier, on forcing press, be hot pressed into horn-like (Fig. 2) by flaring die 2 to the A end of blank local heat to 860 ℃ in salt bath furnace; Again to the B of blank end local heat to 860 ℃ in salt bath furnace, on forcing press, be hot pressed into horn-like (Fig. 3) by flaring die 2, then again the B end is heated to 860 ℃, on forcing press, be hot pressed into drum type (Fig. 4), in 3 minutes, shape (Fig. 5) then by finishing die 5 by reducing die 4.

Claims

1, a kind of hot pressing process for steel sheet rolling wheel, steel plate is rolled into tubular, be welded into steel pipe, press forming again, it is characterized in that in the pressing process earlier an end (A end) local heat to 850 of steel pipe ℃～900 ℃, on forcing press, be hot pressed into horn-likely, to the other end (B end) local heat to 850 of steel pipe ℃～900 ℃, on forcing press, be hot pressed into drum type step by step by flaring die, reducing die, finishing die successively again by flaring die.

2, by the described hot pressing process for steel sheet rolling wheel of claim 1, the local heat that it is characterized in that described steel pipe A, B end is that the position that respectively the steel pipe two ends need be shaped is put into salt bath furnace and heated.

3, by the described hot pressing process for steel sheet rolling wheel of claim 1, before it is characterized in that steel pipe B end carried out enlarging, reducing processing, local heat to 850 ℃～900 ℃ respectively, reducing is processed and is formed mold pressing processing in back 3 minutes.