HK UPPERBOND INDUSTRIAL LIMITED
HK UPPERBOND INDUSTRIAL LIMITED
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Skoda Long Blade For First Cutting Process Of Automatic Cigarette Maker Passim 8000
Cigarette Knife is a component of cigarette making machines to slice cigarette rod before going into the filter assembly machine.
Invention
The invention of stainless steel followed a series of scientific developments, starting in 1798 when chromium was first shown to the French Academy by Louis Vauquelin. In the early 1800s, James Stodart, Michael Faraday, and Robert Mallet observed the resistance of chromium-iron alloys ("chromium steels") to oxidizing agents. Robert Bunsen discovered chromium's resistance to strong acids. The corrosion resistance of iron-chromium alloys may have been first recognized in 1821 by Pierre Berthier, who noted their resistance against attack by some acids and suggested their use in cutlery.
Yield Strength
Yield strength is low (200 to 300 MPa), which limits their use for structural and other load-bearing components. Their elongation is high, which allows for deformation in fabrication processes (such as deep drawing of kitchen sinks).[citation needed] They are weldable by all processes; the most frequently used process is electric arc welding (see welding section below).[citation needed] They are essentially non-magnetic and maintain their ductility at cryogenic temperatures.[citation needed]
Usages
Ferritic stainless steels are cheaper than austenitic steels and are present in many products, which include:
Automobile exhaust pipes (Type 409 and 409 Cb[2] are used in North America; stabilized grades Type 439 and 441 are used in Europe)
Architectural and structural applications (Type 430, which contains 17% Cr)
Household goods, such as kitchenware, sinks, and major appliances
Building components, such as slate hooks, roofing, and chimney ducts
Power plates in solid oxide fuel cells operating at temperatures around 700 °C (1,292 °F) (high-chromium ferritics containing 22% Cr)
