Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ductile cast iron material, composition containing same and production method of bearing saddle and ductile cast iron

A technology of ductile iron and its manufacturing method, which is applied in the field of alloy materials and can solve problems such as not being able to meet the standard requirements of bearing saddles

Active Publication Date: 2016-04-20
CRRC QIQIHAR ROLLING CO LTD
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a nodular cast iron material, a composition containing it, a bearing saddle and a method for making nodular cast iron, so as to solve the problem that the ductile iron material in the prior art cannot meet the standard requirements of the bearing saddle

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
  • Ductile cast iron material, composition containing same and production method of bearing saddle and ductile cast iron
  • Ductile cast iron material, composition containing same and production method of bearing saddle and ductile cast iron
  • Ductile cast iron material, composition containing same and production method of bearing saddle and ductile cast iron

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Melting: put the nodular cast iron material in a 500kg medium-frequency induction melting furnace for melting to obtain molten iron, and control the furnace temperature to 1480°C.

[0057] Spheroidization and inoculation: Use bottom bag spheroidization, put 8kg nodulizer on the bottom of the bag, put 6kg inoculant on top, and then cover with a layer of K-34# slag collector produced by Qingdao Fusaike Casting Materials Co., Ltd. 1kg,. After the spheroidization treatment is completed, the slag is removed and the second inoculation is carried out. Wherein the secondary inoculation adding inoculant is 1kg, and the molten iron after inoculation is obtained;

[0058] Casting: The temperature of the inoculated molten iron is lowered to 1400°C before casting, and the Y-type test bar casting mold is prepared with coated sand. Before pouring, the Kiel test bar sand mold is dried and the floating sand in the sand mold is purged.

[0059] Shakeout:

[0060] Shakeout time 1.5 hou...

Embodiment 2

[0062] The technical process is the same as in Example 1, and the specific parameters are shown in Table 6.

[0063] Table 6

[0064]

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

No PUM Login to View More

Abstract

The invention provides a ductile cast iron material, a composition containing the same and a production method of a bearing saddle and ductile cast iron. The ductile cast iron material comprises the following components in percentage by weight: 3.35-3.81% of C, 2.35-2.75% of Si, 0.35-0.85% of Mn, 0.30-0.56% of Cu, P not more than 0.05%, S not more than 0.05%, and the balance of iron and inevitable impurities. The yield strength, the tensile strength and the elongation of the ductile cast iron produced by the ductile cast iron material with the components can reach standard requirements of the bearing saddle on the tensile strength, the yield strength and the elongation, so that the ductile cast iron can be used for producing the bearing saddle.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a nodular cast iron material, a composition containing the same, a bearing saddle and a method for making the nodular cast iron. Background technique [0002] With the development of railway transportation, heavy-duty and fast transportation have become the two major trends in the development of railway freight. At present, the world's railway wagons have grown to 45 tons of axle load, the total weight of locomotive traction is as high as 38,000 tons, and their operating conditions are very harsh, which puts forward higher requirements for the quality of parts and components of railway wagons. Bearing saddle, as one of the key components of railway freight car bogie, is installed between the rolling bearing of the freight car and the pedestal frame of the side frame during normal operation, and plays the role of connecting the bearing and the side frame, positioning and transmittin...

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
IPC IPC(8): C22C37/04C22C37/10C22C33/08C21C1/10
CPCC21C1/10C22C33/08C22C37/04C22C37/10
Inventor 秦晓锋陶春国田长亮李辉肖利民修磊
Owner CRRC QIQIHAR ROLLING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products