Plastic mold steel 718 and production process thereof
A technology of plastic mold steel and production process, which is applied in the field of iron and steel smelting, can solve the problems of not being able to meet the performance requirements of plastic mold steel 718, and can not be applied to plastic mold steel 718, and achieve the effect of improved production technology and excellent comprehensive performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0044] Example 7
[0045] A production process of plastic mold steel 718 is carried out according to the following steps:
[0046] a. KR molten iron S is removed: the molten iron at the station is subjected to slag removal treatment. It is required that the front and rear slag be completely removed, and the molten iron after S removal contains S0.002%;
[0047] b. Converter smelting: the temperature of molten iron into the furnace is 1300 ℃, high Cr, high Mo and high Ni alloy scrap are added during the smelting process, and the tapping is C0.10%, P0.015%, S0.005% according to the mass percentage, and the number of spot blowing is not More than 2 times to avoid slag in the tapping process;
[0048] c. LF refining: use high iron oxide mixed slag, the mass percentage of the high iron oxide mixed slag is composed of: 70% iron oxide and 30% fluorite, add 800kg lime, control the temperature at 1620 ℃, make the steel The liquid and the slag surface fully react, and the P content of...
Example Embodiment
[0058] Example 8
[0059] A production process of plastic mold steel 718 is carried out according to the following steps:
[0060] a. KR molten iron S is removed: the molten iron at the station is subjected to slag removal treatment. It is required that the front and rear slag be completely removed, and the molten iron after S removal contains S0.002%;
[0061] b. Converter smelting: the temperature of molten iron into the furnace is 1330℃, high Cr, high Mo and high Ni alloy scraps are added during the smelting process, and the tapping is C0.15%, P0.012%, S0.003% according to the mass percentage, and the number of spot blowing is not more than 2 times;
[0062] c. LF refining: use high iron oxide mixed slag, the mass percentage of the high iron oxide mixed slag is composed of: 60% iron oxide and 40% fluorite, add 600kg lime, control the temperature at 1590 ℃, make the steel The liquid and the slag surface fully react, and the P content of the finished product is controlled b...
Example Embodiment
[0071] Example 9
[0072] A production process of plastic mold steel 718 is carried out according to the following steps:
[0073] a. KR molten iron S is removed: the molten iron at the station is subjected to slag removal treatment. It is required that the front and rear slag be completely removed, and the molten iron after S removal contains S0.003%;
[0074] b. Converter smelting: the temperature of molten iron into the furnace is 1315℃, high Cr, high Mo and high Ni alloy scrap is added during the smelting process, and the tapping is C0.12%, P0.012%, S0.004% by mass percentage, and the number of spot blowing is not more than 2 times;
[0075] c. LF refining: use high iron oxide mixed slag, the mass percentage of the high iron oxide mixed slag is composed of: 80% iron oxide and 20% fluorite, add 400kg lime, control the temperature at 1600 ℃, make the steel The liquid and the slag surface fully react, and the P content of the finished product is controlled below 0.003%;
...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap