JPS57120609A - Production of vermicular cast iron - Google Patents
Production of vermicular cast ironInfo
- Publication number
- JPS57120609A JPS57120609A JP19049481A JP19049481A JPS57120609A JP S57120609 A JPS57120609 A JP S57120609A JP 19049481 A JP19049481 A JP 19049481A JP 19049481 A JP19049481 A JP 19049481A JP S57120609 A JPS57120609 A JP S57120609A
- Authority
- JP
- Japan
- Prior art keywords
- cast iron
- vermicular
- fluoride
- molten metal
- graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE: To obtain vermicular cast iron having stable vermicular graphite structure by adding a mixture of calcium silicide and fluoride of rare earth metals to molten metal of desulfurized cast iron.
CONSTITUTION: A mixture consisting of 0.10W1.0wt% calcium silicide and 0.05W 0.50% fluoride of rare earch metals is added to molten metal of desulfurized cast iron. Thereby, vermicular cast iron of a low content of spheroidal graphite contg. no free cementite and flake graphite at all is obtained irrespectively of the difference in wall thickness as far as the wall thickness is not below about 3mm. Out of the chemical components of this cast iron, the contents of the following components are regulated to 1.5W2.0% Si, 0.50W0.70% Mn, 0.20W1.0% Cu, 0.020W0.10% Sn, and the ratio of pearlite occupied in the base structure is increased, whereby mechanical properties such as hardness, yield strength, tensile strength and abrasion resistance are improved.
COPYRIGHT: (C)1982,JPO&Japio
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21487780A | 1980-12-10 | 1980-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57120609A true JPS57120609A (en) | 1982-07-27 |
Family
ID=22800758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19049481A Pending JPS57120609A (en) | 1980-12-10 | 1981-11-30 | Production of vermicular cast iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57120609A (en) |
-
1981
- 1981-11-30 JP JP19049481A patent/JPS57120609A/en active Pending
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