Cylinder liner and method of forming the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B22C-003/00
F02F-001/00
C21D-009/08
C21D-001/19
C22C-038/16
C22C-038/08
C22C-038/04
C22C-038/02
C22C-038/00
C22C-038/12
출원번호
US-0608169
(2015-01-28)
등록번호
US-9850846
(2017-12-26)
발명자
/ 주소
Qin, Xiaocai
출원인 / 주소
ZYNP INTERNATIONAL CORP.
대리인 / 주소
Shumaker, Loop & Kendrick, LLP
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
A high strength cast iron material for application in heavy duty diesel engines with Pa peak cylinder pressure greater than 240 bar is disclosed, the material a ductile material austempered to get a ausferrite matrix structure with higher mechanical properties than conventional cast iron materials a
A high strength cast iron material for application in heavy duty diesel engines with Pa peak cylinder pressure greater than 240 bar is disclosed, the material a ductile material austempered to get a ausferrite matrix structure with higher mechanical properties than conventional cast iron materials available by using a designed low cost alloying cast material with heat treatment. Furthermore, the cylinder liner may be formed using novel heat treatment and/or fine honing processes to improve the properties thereof.
대표청구항▼
1. A cylinder liner comprising: an inner sidewall formed from a microstructure comprising ausferrite, nodular graphite, between about 3.55 wt % and about 3.65 wt % C, and between about 0.005% and about 0.06% Mg, wherein the microstructure includes graphite-nodular (form I) >80%, nodule size class 6-
1. A cylinder liner comprising: an inner sidewall formed from a microstructure comprising ausferrite, nodular graphite, between about 3.55 wt % and about 3.65 wt % C, and between about 0.005% and about 0.06% Mg, wherein the microstructure includes graphite-nodular (form I) >80%, nodule size class 6-7 (20-30 μm), and matrix-acicular ausferrite. 2. The cylinder liner of claim 1, wherein the ausferrite of the sidewall is formed from a combination of high carbon enriched metastable austenite plus acicular ferrite. 3. The cylinder liner of claim 1, wherein the sidewall is substantially free from flake graphite. 4. The cylinder liner of claim 1, wherein the sidewall includes between about 2.30 wt % and about 2.40 wt % Si. 5. The cylinder liner of claim 4, wherein the sidewall includes between about 0.45 wt % and about 0.50 wt % Mn. 6. The cylinder liner of claim 5, wherein the sidewall includes between about 0.020 wt % and about 0.030 wt % P. 7. The cylinder liner of claim 6, wherein the sidewall includes between about 0.15 wt % and about 0.25 wt % S. 8. The cylinder liner of claim 7, wherein the sidewall includes between about 0.80 wt % and about 0.90 wt % Cu. 9. The cylinder liner of claim 8, wherein the sidewall includes between about 0.30 wt % and about 0.40 wt % Ni. 10. The cylinder liner of claim 9, wherein the sidewall includes between about 0.10 qt % and about 0.20 wt % Mo. 11. The cylinder liner of claim 10, wherein the sidewall includes between about 0.005 wt % and about 0.06 wt %. 12. The cylinder liner of claim 11, wherein the sidewall is substantially free from Cr. 13. The cylinder liner of claim 12, wherein the sidewall includes about 3.62 wt % C, about 2.36 wt % Si, about 0.49 wt % Mn, about 0.27 wt % P, about 0.20 wt % S, about 0.87 wt % Cu, about 0.34 wt % Ni, and about 0.14 wt % Mo. 14. A cylinder liner comprising: a sidewall formed from a microstructure comprising ausferrite and nodular graphite, wherein the microstructure includes graphite-nodular (form I) >80%, nodule size class 6-7 (20-30 μm), and matrix-acicular ausferrite, the sidewall consisting essentially of: between about 3.55 wt % and about 3.65 wt % C,between about 2.30 wt % and about 2.40 wt % Si,between about 0.45 wt % and about 0.50 wt % Mn,between about 0.020 wt % and about 0.030 wt % P,between about 0.15 wt % and about 0.25 wt % S,between about 0.80 wt % and about 0.90 wt % Cu,between about 0.30 wt % and about 0.40 wt % Ni,between about 0.10 wt % and about 0.20 wt % Mo, andbetween about 0.005% and about 0.06% Mg.
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이 특허에 인용된 특허 (8)
Bedwell, Tommy J.; Miller, John F., Austempered gray iron cylinder liner and method of manufacture.
Pelsoeczy, Laszlo; Langner, Wilfried; Zutz, Hans-Henning; Gerle, Thomas; Goebbeis, Franz-J., Ledeburite cast iron with a high carbide content and an evenly distributed graphite embodiment.
Hayes William J. (Shelby MI) Matrone Harry A. (North Muskegon MI) Johnson Philip D. (Whitehall MI), Process of making an austempered ductile iron article.
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