Unlock instant, AI-driven research and patent intelligence for your innovation.

Casting method of high-strength and high-density alloy ductile iron traction wheel casting

A traction sheave, high-strength technology, applied in casting molding equipment, molds, mold components, etc., can solve the problems of inability to meet the requirements of ductile iron traction sheave, unstable metallographic structure, rough appearance, etc.

Active Publication Date: 2018-06-12
杭州德曼汽车零部件有限公司
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of traditional green sand casting is rough, the metallographic structure of the inner matrix is ​​unstable, the inner part of the casting body shrinks, and the hardness of the casting body is not up to the standard, which cannot meet the requirements of the ductile iron traction wheel, and the production efficiency is low, and the casting yield rate is low. Low and high casting rejection rate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Casting method of high-strength and high-density alloy ductile iron traction wheel casting
  • Casting method of high-strength and high-density alloy ductile iron traction wheel casting
  • Casting method of high-strength and high-density alloy ductile iron traction wheel casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: with reference to attached Figure 1-Figure 3 . A casting method of high-strength and high-density alloy ductile iron traction wheel castings, step 1, the preparation of the traction wheel mold, first sand molding the traction wheel mold and processing the cavity, and sequentially making the lower mold cavity and the upper mold cavity, and then combine the lower mold cavity and the upper mold cavity to form a casting cavity for the traction wheel; step 2, casting the traction wheel, first put the mixed metal charge into the melting equipment for metal melting and the melting temperature reaches 1500 ° C ± The iron tapping operation is carried out at 10°C, and then the smelted molten iron is inoculated with the flow. After the inoculation treatment, the temperature of the molten iron is controlled at 1360°C~1380°C, and the molten iron is poured at a speed of 40±5 seconds / box. In the traction wheel casting mold cavity; Step 3, heat preservation treatment fo...

Embodiment 2

[0011] Embodiment 2: on the basis of embodiment 1. The metal mixed furnace charge is composed of carbon, silicon, manganese, copper, molybdenum, antimony, phosphorus, sulfur, magnesium, and iron, and the percentages of each raw material composition are as follows: carbon is 3.5%, silicon is 2.2%, manganese is 0.35%, Copper is 0.3%, molybdenum is 0.25%, antimony is 0.025%, phosphorus is 0.06%, sulfur is 0.02%, magnesium is 0.05%, and iron is 93.245%.

Embodiment 3

[0012] Embodiment 3: on the basis of embodiment 1. The mixed metal charge is composed of carbon, silicon, manganese, copper, molybdenum, antimony, phosphorus, sulfur, magnesium, and iron, and the percentages of each raw material composition are as follows: carbon is 3.75%, silicon is 2.6%, manganese is 0.7%, Copper is 0.5%, molybdenum is 0.35%, antimony is 0.035%, phosphorus is 0.05%, sulfur is 0.01%, magnesium is 0.06%, and iron is 91.945%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
elongationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a casting method of a high-strength and high-density alloy ductile iron traction wheel casting, which not only enables a casting main body to have high hardness and high tensile strength, but also is high in production efficiency, high in casting yield rate and low in casting defective rate. The casting method comprises the following steps: step 1, preparing a traction wheel die, to be specific, firstly carrying out sand molding and cavity treatment on the traction wheel die, sequentially making a lower die cavity and an upper die cavity, and then, assembling the lowerdie cavity and the upper die cavity, forming a traction wheel casting cavity; step 2, casting a traction wheel, to be specific, firstly feeding a metal charge mixture into melting equipment, carryingout metal melting, and carrying out tapping operation when melting temperature reaches 1490 to 1510DEG C; and then carrying out metal-stream inoculation treatment on molten iron melt, and pouring theiron melt into the traction wheel casting cavity at a speed of 35-45 seconds / box when the temperature of the iron melt subjected to inoculation treatment is controlled at 1360-1380DEG C; and step 3,carrying out thermal insulating treatment on the traction wheel, opening the cavity for casting the traction wheel and taking out the traction wheel casting. The casting method has the advantages thatthe mechanical performance and matrix structure of the casting are greatly improved; and the yield rate of the blank casting product is increased from original 65% to 80%, and the defective rate of the casting is reduced within 1% from original 15%.

Description

technical field [0001] The invention relates to a casting method of high-strength and high-density alloy ductile iron traction wheel castings, which can not only make the casting body have high hardness and strong tensile resistance, but also has high production efficiency, high casting yield and low casting rejection rate, belonging to the traction wheel casting method. Wheel manufacturing field. Background technique [0002] The ductile iron traction wheel is one of the most important parts on the elevator of the large-scale high-altitude three-dimensional parking garage today. It is responsible for the entire three-dimensional parking garage lifting tower elevator transmission system. Therefore, the manufacturing requirements are relatively high, and it belongs to the A-type part of the tower elevator. . The appearance of traditional green sand casting is rough, the metallographic structure of the inner matrix is ​​unstable, the inner part of the casting body shrinks and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/28B22C9/08B22D1/00C22C37/04C22C37/10
CPCB22C9/02B22C9/082B22C9/28B22D1/00C22C37/04C22C37/10
Inventor 魏新立
Owner 杭州德曼汽车零部件有限公司