CN103008633A

CN103008633A - Foundry ladle for pouring ductile cast molten iron

Info

Publication number: CN103008633A
Application number: CN2012105696496A
Authority: CN
Inventors: 李文生
Original assignee: HOUMA CITY XIN MACHINERY CASTING Ltd Co
Current assignee: HOUMA CITY XIN MACHINERY CASTING Ltd Co
Priority date: 2012-12-25
Filing date: 2012-12-25
Publication date: 2013-04-03

Abstract

The invention relates to a foundry ladle for pouring ductile cast molten iron. The outer wall of a foundry ladle body (1) of the foundry ladle is provided with a ladle mouth (3); the ladle mouth (3) is vertically communicated with the entire foundry ladle body (1); the outlet of the ladle mouth (3) is provided with a residue decantation plate (2); and an included angle between the residue decantation plate (2) and the top horizontal plane of the ladle mouth (3) is 30-80 degrees. A molten iron outlet is formed on the upper parts of the residue decantation plate and the ladle mouth, molten iron flows out of the upper side of the foundry ladle during casting, and a molten iron port is always kept below a molten iron liquid surface, so that residues above the molten iron liquid surface and outflow molten iron are isolated effectively, and the effect of decanting residues is achieved; low-temperature molten iron on the upper side of the foundry ladle flows out firstly, the cooling speed of high-temperature molten iron below is lowered relatively, and the molten iron pouring temperature difference between head and tail boxes is reduced effectively before and after pouring while residue decantation is ensured, so that the tapping temperature is lowered, the melting time is shortened, energy is saved, and unnecessary product defects are avoided.

Description

The ladle that is used for the molten ductile cast iron cast

Technical field

The invention belongs to Casting Equipment, be specifically related to a kind of ladle for the molten ductile cast iron cast.

Background technology

Spheroidal graphite cast-iron is a kind of of cast iron, and is higher than gray cast iron properties, substantially reaches the performance of steel, better than steel casting performance, wearability is strong, and the part blank that is widely used in industry-by-industry is made.Because the particularity of spheroidal graphite cast-iron production process, from molten iron, easily separate out bits, present ladle is teapot-type, its structure is that ladle has a through hole with the bag mouth at the bag end, the bits that form during cast float to ladle, and molten iron is to flow out from the ladle bottom first, the molten iron of bits and outflow will be separated like this, play the effect of straining slag, but the molten iron cooling is very fast above the ladle, the molten iron of cooling such as untimely use and following high temperature liquid iron carry out convection current, to cause whole iron clad water fast cooling, this teapot-type ladle is preferentially used the high temperature liquid iron of bag below, and cool molten iron remains up, cause the temperature difference of first and last case molten steel pouring temperature larger, sometimes up to 80 ℃.

Summary of the invention

Technical problem to be solved by this invention is to overcome above-mentioned deficiency, and a kind of ladle for the molten ductile cast iron cast is provided, and this ladle not only can be strained the bits in the molten iron, and can effectively dwindle the temperature difference of cast front and back first and last case molten iron cast.

Technical scheme of the present invention: the ladle that is used for the molten ductile cast iron cast, be provided with the bag mouth on the outer wall of the molten iron inclusion of this ladle, the bag mouth communicates down on the whole with the molten iron inclusion, and the exit of bag mouth is provided with strains slag plate, and straining slag plate is 30～80 ° with the angle that wraps the mouth top levels.

The present invention compared with prior art has following beneficial effect: molten iron inclusion of the present invention and Bao Zui weld together, and communicate down on the whole, exit at the bag mouth is provided with and strains slag plate, strain slag plate and Bao Zui top and form the mouth of a river of tapping a blast furnace, molten iron flows out above ladle when cast, the molten iron mouth is all the time below molten iron level, effectively the molten iron with the bits on the molten iron level and outflow separates, play the slag effect of straining, low-temperature molten iron flows out first above the ladle, the cooling rate relative reduce of following high temperature liquid iron, when guaranteeing to strain slag, effectively reduced the temperature difference of first and last case molten iron cast before and after the cast, thereby reduced tapping temperature, reduced fusing time, the unnecessary product defects of not only having saved the energy but also having avoided bringing thus.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is top view of the present invention.

The specific embodiment

A kind of ladle for the molten ductile cast iron cast, such as Fig. 1, shown in 2, be welded with bag mouth 3 on the outer wall of the molten iron inclusion 1 of this ladle, bag mouth 3 communicates down on the whole with molten iron inclusion 1, the exit of bag mouth 3 is provided with strains slag plate 2, straining slag plate 2 is 60 ° with the angle that wraps mouth 3 top levels, strain slag plate 2 and form the mouth of a river of tapping a blast furnace with bag mouth 3 tops, molten iron flows out above ladle when cast, the molten iron mouth is all the time below molten iron level, effectively the molten iron with the bits on the molten iron level and outflow separates, play the slag effect of straining, low-temperature molten iron flows out first above the ladle, below the cooling rate relative reduce of high temperature liquid iron, when guaranteeing to strain slag, effectively reduced the temperature difference of first and last case molten iron cast before and after the cast.

Claims

1. the ladle that is used for the molten ductile cast iron cast, be provided with bag mouth (3) on the outer wall of the molten iron inclusion (1) of this ladle, it is characterized in that wrapping mouth (3) communicates down on the whole with molten iron inclusion (1), the exit of bag mouth (3) is provided with strains slag plate (2), and straining slag plate (2) is 30～80 ° with the angle that wraps mouth (3) top levels.