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Technical exchange of stainless steel bearings
Source: Bearing network time: 2013-11-13
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Both have rust and corrosion resistance. Add with Cr amount; resist oxidizing acid corrosion and high temperature oxidation resistance such as nitric acid; improve vulcanization function. Advance with Ni amount; resistance to chloride stress corrosion and resistance to reducing acid Add. With the decrease of C amount; or participate in the stability of the elements; steel resistance to intergranular corrosion improved. With the addition of Mo; steel resistance to reducing acid and pitting corrosion; crevice corrosion function added. Steel contains Cu; Especially Mo, Cu composite; steel has significant improvement in sulfuric acid resistance; when it contains Si~4%; it can resist fuming nitric acid corrosion. It can reduce the content of impurity elements C, Si, P, Ti, etc. in some steels; Grade; urea grade stainless steel application.
Mechanical and physical functions:
Excellent cooperation with strong-toughness-plasticity; excellent low temperature resistance; can be used as low temperature steel. With the decrease of C content in steel; the strength of steel is slightly reduced (usually low carbon steel is lower than carbon high 29.4~ 49MPa) with the addition of cold deformation; steel strength; elastic progress steel containing N; steel strength added. Cr-Mn austenitic stainless steel because of Mn, N participation in strengthening effect, strength compared to Cr-Ni austenite Steel is about 30% high; and plastic; resistance is still good. Most of these steels are non-magnetic; so they can be used as non-magnetic steel.
Martensitic stainless steel corrosion resistance:
Martensite chrome stainless steel has rust resistance; resistance to weak medium corrosion; progress with Cr amount; Mo participates in corrosion resistance addition; progress with C content; corrosion resistance decreases; hardness addition; resistance to hydrogen sulfide stress corrosion Progress. Martensitic chrome-nickel stainless steel has rust; when Cr is 17%; corrosion resistance is near or slightly below 18-8.
Mechanical and physical functions:
Martensite chromium stainless steel is added with C content; steel strength; hardness improvement; up to RC60; steel wear resistance is good; but poor resistance. When Mo, V; steel strength progress. The strong-resistance cooperation of steel is good. This kind of steel has brittle transition temperature; it has magnetic properties; density. It is abundance of abalone. It has a high strength (ós is not less than 9800MPa). And high hardness (RC is not less than 36); has a higher strength / component ratio.
Information used in stainless steel bearings:
SUS304; SUS316; SUS316L: inner and outer rings in austenitic stainless steel bearings; ball; cage; rivet; bearing seat; top wire; dust cover; seal ring skeleton; cage in martensitic stainless steel bearing; rivet; Sitting; top wire; dust cover; seal ring skeleton.
SUS440C; SUS440B: inner and outer rings in martensitic stainless steel bearings; ball.
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