Download - Academy Publisher
Download - Academy Publisher
Download - Academy Publisher
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
ISBN 978-952-5726-09-1 (Print)<br />
Proceedings of the Second International Symposium on Networking and Network Security (ISNNS ’10)<br />
Jinggangshan, P. R. China, 2-4, April. 2010, pp. 027-030<br />
Research and Application of Auto-profiling<br />
Control Algorithm for 0Cr18Ni10Ti<br />
Qiang Wang 1 , XuGuang Min 2 , ZhongYue Xiao 1 , and Yanhui Zhou 1<br />
1<br />
Jinggangshan University, Ji’an, China<br />
Email: wangqiang2188@tom.com<br />
2<br />
Jiangxi Science&Technology Normal University, Nanchang, China<br />
Abstract—The paper analysis the material composition,<br />
properties and application technology of 0Cr18Ni10Ti , and<br />
it is an understanding of the material’s mechanical<br />
properties and corrosion-resistance. The using of<br />
stabilization heat treatment process, solution heat treatment,<br />
controlling the chemical composition and production<br />
process conditions, etc. improved the overall performance of<br />
0Cr18Ni10Ti and the capacity of arain boundary corrosion<br />
resistance.Method of the multi-punching process and<br />
profiling&following control algorithm processing is then<br />
established and controlled to the machining ration speed,<br />
tool feed and cutting depth,which achieves better results.<br />
The practical application indicates that producing the<br />
flexible laminated membrane coupling by using<br />
0Cr18Ni10Ti makes the coupling highly efficient and<br />
reliable in transmission, lighter, easier to<br />
assemble/disassemble, easier to machine and less costly, and<br />
thereby that such an application is noticeably superior than<br />
those of traditional materials. It guarantees product quality<br />
and increased work efficiency.<br />
Index Terms—control algorithm; 0CrNi10Ti; Coupling Disk;<br />
Solution Heat Treatment; Stabilization Treatment<br />
I. INTRODUCTION<br />
Stainless steel, one of the greatest inventions in 20th<br />
century, covers a range of more than 300 steels. Materials<br />
under this category are widely used for their excellent<br />
corrosion- and erosion-resistance features and their high<br />
comprehensive performances, and consequently they<br />
include nearly all steels for special purpose. How the<br />
steels are corrosion-resistant is decided by the alloy<br />
elements contained in them, which resist faintly corrosive<br />
media including water, steam and air as well chemical<br />
erosive media like acid, alkali and salt. Chromium (Cr) is<br />
a basic element in stainless steels that works against<br />
corrosion. When chromium content in steel reaches at<br />
some 12%, the element reacts with oxygen in corrosive<br />
medium and develops a thin oxide film on the surface<br />
which prevents further corrosion in substrate. Among the<br />
steels of various substrates, ferritic stainless steel,<br />
containing chromium between 12% and 30%, possesses<br />
good corrosion-resistance, tenacity and solderability, all<br />
of which increase along with higher chromium content,<br />
and it behaves better than other stainless steels in<br />
resistance to chloride stress corrosion. Martensitic<br />
stainless steel is of high strength but of poor plasticity<br />
and solderability. Whereas Austenitic stainless steel<br />
contains chromium more than 18% in content and nickel<br />
about 8% and trifle of molybdenum, titanium, nitrogen<br />
© 2010 ACADEMY PUBLISHER<br />
AP-PROC-CS-10CN006<br />
27<br />
and other elements. This metal, combining merits of<br />
austenitic steel and ferritic stainless steel, is of desirable<br />
comprehensive performances and resistance to multiple<br />
corrosions, in addition to its superplasticity. One typical<br />
member of this family is 0Cr18Ni10Ti. By using the<br />
profiling&following control algorithm processing and<br />
controlled to the machining ration speed, tool feed and<br />
cutting depth,which achieves better mechanical<br />
processing results.<br />
II. OVERVIEW OF 0CR18NI10TI<br />
0Cr18Ni10Ti, also called as SS321, is a kind of<br />
chromium-nickel austenite stainless steel in series 300.<br />
Besides chromium, as is known, stainless steel is often<br />
made with alloy elements like nickel, molybdenum,<br />
titanium, niobium, copper, nitrogen and others, which are<br />
added in to meet the requirements of proper use in<br />
different situations and of good machining properties. For<br />
instance, steel with trifle sulfur and phosphor is easier to<br />
be machined, that with molybdenum given a special<br />
structure which is corrosion-resistant and thus usable in<br />
food industry and medical operation apparatus industry.<br />
The 0Cr18Ni10Ti is one of the most used stainless steel.<br />
It is of performances similar to 0Cr18Ni9 except that the<br />
former contains titanium, which is added to restrain the<br />
precipitation of (Cr, Fe) 23C6 at the grain boundaries and<br />
reduce the intergranular corrosion possibility, thus<br />
enhancing the material in its weld corrosion-resistance.<br />
Thanks to its excellent mechanical properties<br />
and anti-corrosion performances, the material is widely<br />
used across industries.<br />
A. Compositions<br />
The material is defined with a broad range of chemical<br />
elements, as shown in Table I. However, rigid control of<br />
its chemical composition is significant. As Cr, Ni and Ti<br />
elements are vital to the resistance to intergranular<br />
corrosion, the chemical composition in the steel should be<br />
determined specifically according to the operational<br />
requirements of parts made from it and to the conditions<br />
of processing equipments. In case that the material is to<br />
be used for welding, some ferrite retained in the steel is<br />
helpful to improve its welding performance. Then the<br />
content of ferrite should be properly figured out in<br />
procedure of composition decision, where Fisher Phase<br />
Diagram is used to determine the as-cast ferrite content<br />
based on nickel equivalent and chromium equivalent. The<br />
chemical elements possibly contained in 0Cr18Ni10Ti