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.