A Z-shaped ductile iron platform and its casting method

Abstract

The invention discloses a Z-shaped nodular cast iron platform and its casting method, which solves the problems of poor formability, difficulty in production organization, difficulty in guaranteeing casting contour size and internal quality, high production cost, and poor mechanical properties of the Z-shaped nodular cast iron platform in the prior art. shortcoming. On the basis of pit core assembly and three-box modeling, the present invention uses a plurality of sand boxes to make the lower box, assists the chilling effect of the cold iron and the full feeding effect of the riser, and ensures that the castings are solidified in a directional sequence, and the castings Keep the temperature below 300°C and shake out the sand, and obtain a Z-shaped nodular cast iron platform by casting method. At the same time, by reasonably controlling the ratio of the furnace charge and the ratio of elements in the ductile iron, the round and fine graphite balls can be obtained through the spheroidization treatment of the wire feeding method, and the Z-shaped nodular cast iron platform can be stably produced through multiple inoculations. The invention has the advantages of simple and feasible production organization, convenient operation and low manufacturing cost, and is especially suitable for making Z-shaped nodular cast iron heavy equipment platforms.

Description

technical field [0001] The invention relates to a Z-shaped nodular cast iron platform, in particular to a Z-shaped nodular cast iron platform and a casting method thereof. Background technique [0002] It is well known that the platform is a key basic component of heavy equipment and plays a supporting role. The platform plays an extremely important role in the safe and stable operation of heavy equipment. With the development of electric power equipment, mining machinery, aerospace and other industries, heavy equipment is developing in the direction of large-scale, high-precision, and composite multi-function. The basic characteristics of heavy equipment platform castings are large outline size, heavy weight, complex structure, high mechanical performance requirements, and uneven wall thickness. Conventional heavy equipment platforms are made of gray cast iron and connected in multiple sections, with small specifications and low strength, and the mass is generally between ...

AI Technical Summary

Problems solved by technology

As a supporting force for some heavy equipment, the Z-shaped platform has a mass of 100t, a main body wall thickness of 100-130mm, a length of 8150mm, a width of 4202mm, and a height of 1075mm. Distortion, shrinkage cavity shrinkage and other defects

At present, using conventional methods to produce Z-shaped ductile iron platforms faces a series of difficulties, such as difficulties in production organization, difficulty in guaranteeing the contour size and internal quality of castings, etc.