Paper Filler Circular Cutter Of Cigarette Assembly Line For Last
Cutting Process Of Filters With Cigarette Rod
Filter Knife is a component of cigarette making machines to slice
filter rod after being connected to cigarette rod.
1. Martensitic Stainless Steels
They fall into four categories (with some overlap)
Martensitic stainless steels ranges from a wide variety of
properties and are used as stainless engineering steels, stainless
tool steels, and creep-resistant steels. They are magnetic, and are
not as corrosion-resistant as ferritic and austenitic stainless
steels due to their low chromium content.
2. Heat Treatment Of Martensitic Stainless Steels
Austenitizing, where the steel is heated to a temperature in the
range 980–1,050 °C (1,800–1,920 °F), depending on grade. The
resulting austenite has a face-centered cubic crystal structure.
Tempering. Martensite would be heated to around 500 °C (932 °F),
held at such high temperature, then air-cooled. Higher tempering
temperatures decrease yield strength and ultimate tensile strength
but increase the elongation and impact resistance.
Quenching. The austenite is transformed into martensite, a hard
body-centered tetragonal crystal structure. The quenched martensite
is too hard and brittle for most applications. Some residual
austenite may remain.
3. Nitrogen-Alloyed Martensitic Stainless Steels
Replacing some carbon in martensitic stainless steels by nitrogen
is a just recent development. The limited solubility of nitrogen
would be increased by the pressure electroslag refining process, in
which melting is carried out under nitrogen pressure. Steel
containing up to 0.41% nitrogen is achieved, leading to higher
hardness and strength and higher corrosion resistance. As PESR is
expensive, lower but significant nitrogen contents have been
achieved by using the standard argon oxygen decarburization
process.
