Double phase cast iron cylinder liner produced through centrifugal casting, and processing technology thereof
A technology of centrifugal casting and processing technology, which is applied in the field of heat treatment, can solve the problems of poor strength and wear resistance, and cannot meet the requirements of cylinder liner strength and wear resistance, etc., and achieve the effect of good thermal fatigue resistance and high strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0014] The weight percent composition of duplex cast iron cylinder liner is as follows: C: 3.83, Si: 2.2, P: 0.027, S: 0.022, Mn: 0.24, Cu: 1.25, Sn: 0.043, residual Mg: 0.029, Ce: 0.021, and the balance is iron.
[0015] The process of manufacturing the above-mentioned dual-phase cast iron cylinder liner produced by centrifugal casting, the steps are as follows:
[0016] 1) Casting: Casting temperature is 1400°C, centrifuge speed is 1200 rpm;
[0017] 2) Machining: process the cylinder liner blank into a semi-finished product, leaving a margin of 0.5mm for the inner hole and outer circle;
[0018] 3) Heat treatment: put the cylinder liner into a neutral atmosphere furnace at 920°C for austenitization for 1.5 hours, pre-cooling time T (second)=12+3*wall thickness of one side of the liner (mm), and then quench into 320°C In the nitrate salt bath, the isothermal time is 80min.
Embodiment 2
[0020] The weight percentage composition of the duplex cast iron cylinder liner is as follows: C: 3.80, Si: 2.80, P: 0.025, S: 0.02, Mn: 0.2, Cu: 1.2, Sn: 0.045, residual Mg: 0.022, Ce: 0.015, and the balance is iron.
[0021] The process of manufacturing the above-mentioned dual-phase cast iron cylinder liner produced by centrifugal casting, the steps are as follows:
[0022] 1) Casting: the casting temperature is 1420°C, and the centrifuge speed is 1300 rpm;
[0023] 2) Machining: process the cylinder liner blank into a semi-finished product, leaving a margin of 0.4mm for the inner hole and outer circle;
[0024] 3) Heat treatment: put the cylinder liner into a neutral atmosphere furnace at 920°C for austenitization for 1.5 hours, pre-cooling time T (second)=12+3*wall thickness of one side of the liner (mm), and then quench into 310°C In the nitrate salt bath, the isothermal time is 75min.
Embodiment 3
[0026] The weight percent composition of duplex cast iron cylinder liner is as follows: C: 3.90, Si: 2.5, P: 0.05, S: 0.03, Mn: 0.25, Cu: 1.3, Sn: 0.05, residual Mg: 0.03, Ce: 0.019, and the balance is iron.
[0027] The process of manufacturing the above-mentioned dual-phase cast iron cylinder liner produced by centrifugal casting, the steps are as follows:
[0028] 1) Casting: Casting temperature is 1450°C, centrifuge speed is 1400 rpm;
[0029] 2) Machining: process the cylinder liner blank into a semi-finished product, leaving a margin of 0.6mm for the inner hole and outer circle;
[0030] 3) Heat treatment: put the cylinder liner into a neutral atmosphere furnace at 920°C for austenitization for 1.5 hours, pre-cooling time T (second)=12+3*wall thickness of one side of the liner (mm), and then quench into 330°C In the nitrate salt bath, the isothermal time is 85min.
[0031] Such as figure 1 As shown, after heating in a neutral atmosphere and isothermal quenching, the ...
PUM
Property | Measurement | Unit |
---|---|---|
tensile strength | aaaaa | aaaaa |
tensile strength | aaaaa | aaaaa |
hardness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com