Quench And Temper Martensitic Stainless Steel Bearing Bush , Pallet
Martensitic Stainless Steel Castings And Forgings Bearing Bush, Pallet
1. Martensite castings and forgings treatment process and use
Martensitic stainless steel, martensitic precipitation hardening stainless steel, martensitic heat resistant steel and maraging steel are different according to the composition, heat treatment process performance and application.
(1) Martensitic stainless steel with chromium content of 13% ~ 18%, used in quenching and tempering state, used for turbine blades (with low carbon), medical and surgical tools, measuring tools, springs, etc. (with high carbon).
(2) Martensite precipitation hardening stainless steel, chromium nickel content is higher than the former, after high temperature solution, quenching, and aging treatment at 400 ~ 500℃, in the martensite matrix precipitated a large number of the second phase and the matrix of the structure of the structure of chemical pressure vessels, aircraft, etc.
(3) Martensitic heat-resistant steel contains 7.5% ~ 20.5% chromium, 0.15% ~ 0.85% carbon and a variety of alloying elements. It is tempered at 650 ~ 700℃ to form fine carbides dispersed in the matrix. It is mainly used in valves, turbine blades, nozes and bolts of automobile engines.
(4) The maraging steel, containing 18% ~ 25% nickel, 5% molybdenum, 8% cobalt and a small amount of titanium and aluminum, is aged at 480℃ after solid solution and air cooling.
Because of the high cost, it is generally used in important structural parts of aviation, aerospace and ocean technology, such as rocket engine shells, aircraft landing gear, important molds, etc.
2. Martensite castings and forgings stiffness correlation parameters
| Type | Main components(%) | Processing temperature(℃) | Technology processing | Application |
| Martensitic stainless steel | Chromium content 13%～18% | Quench and temper | Steam turbine blades (lower carbon), medical and surgical tools, measuring tools, springs, etc. (higher carbon) | |
| Martensite precipitation hardening stainless steel | 400～500℃ | High temperature solution, quenching | Chemical pressure vessel, aircraft structure | |
| Martensitic heat resistant steel | Chromium content 7.5%～20.5% | 650～700℃ | Tempering | It is mainly used for valves, turbine blades, nozzles, bolts, etc |
| Maraging steel | The content of nickel is 18% ~ 25%, molybdenum 5%, cobalt 8% and a small amount of titanium and aluminum | 480℃ | Solid solution of air cooling | Rocket engine casings, aircraft landing gear, important molds |
FQA
Q: Why we believe in luoyang zhongtai industries co., ltd:
A: 1. More than 30 years experience.
2.We are the leading professional supplier of mining machinery, construction machinery, machines casting and forged parts.
3. All products achieved ISO9901:2000 quality management certificate and CE, ROHS certificates.
Q:Delivery time :
A: Parts lead time 1-2months, machines 2-3months.
Q:Payment terms :
A: Accept payment type: T/T, L/C, Western union,Cash. 30% deposit when signed contract. Full payment paid before shipping.
Q: Quality warranty?
A: Guarantee time: one year for main machinery. If something wrong we will provide the technical advice and find solution immediately. For those wearing parts we guarantee high quality parts for long-term supply.
Q: After sales service?
A: We can supply technical guide for machines running test and parts maintenance if end user needs.
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