Results 21 to 30 of about 1,477 (101)

Evolution of friction and wear in rack-railway gear–rack pairs under heavy-load dry sliding conditions

open access: yesAIP Advances
Rack railways commonly operate under extreme conditions—steep gradients, heavy loads, and dry sliding—where wear of the gear–rack pair becomes a critical limitation to both safety and cost-effectiveness.
Haowei Yu   +3 more
doaj   +2 more sources

Finite element analysis of effect of double shot peening on residual stress of 18CrNiMo7-6 gear steel

open access: yesJixie chuandong
ObjectiveTo address the issues of uneven residual compressive stress distribution and high surface roughness in gears after shot peening, this study investigates the effect of double shot peening on the surface integrity of 18CrNiMo7-6 carburized gear ...
WANG Zhen, SUN Hao, WANG Guohao
doaj   +2 more sources

Evolution of Inclusions in Gear Steel 18CrNiMo7-6 during 60t LF-VD Reflning Process

open access: yesTeshugang, 2016
The metallurgical flowsheet for steel 18CrNiMo7-6 (/%: 0. 17C, 0. 57Mn, 0. 24Si, 0. 012P, 0. 003S, 1.70Cr, 1. 49Ni, 0. 28Mo) is 60t EAF-LF-VD-2.1t ingot.
刘金鑫   +4 more
doaj   +1 more source

Experimental Study on the Influence of Lubrication Condition on Scuffing Damage of Gear Under Low Speed and Heavy Load

open access: yesJixie chuandong, 2021
In order to study the influence of lubrication conditions on the scuffing damage of gear under low speed and heavy load, the meshing of gear teeth is simulated by a pair of ring specimens in rolling and sliding contact, and the scuffing tests of ...
Chao Chen   +3 more
doaj   +2 more sources

STUDY ON THE EFFECT OF SURFACE COMPOSITE STRENGTHENING ON THE SURFACE INTEGRITY OF 18CrNiMo7⁃6 CARBURIZED GEAR STEEL

open access: yesJixie qiangdu
Shot peening process is widely used in the manufacturing process of gears and other basic components, and its own limitations limit the enhancement of the surface integrity of the workpiece.
WANG Zhen   +5 more
doaj   +3 more sources

Effect of Ingot Heating and Forged Products Heat Treatment Process on Banded-Structure of Φ540 mm Bar of Steel 18CrNiMo7-6

open access: yesTeshugang, 2015
Process flowsheet of test heavy gear steel 18CrNiMo7-6 (/% : 0.165C , 0.59Mn, 0.24Si, 0.006S, 0.008P, 1.56Ni, 1.71Cr, 0.28Mo, 0.034Al, 0.0129N) is 60 t UHP EAF-LF-VD-12.5 t ingot casting process.
刘金鑫   +5 more
doaj   +1 more source

Gradient Microstructure in a Gear Steel Produced by Pressurized Gas Nitriding. [PDF]

open access: yesMaterials (Basel), 2019
A tempered martensitic gear steel (18CrNiMo7-6) sample was nitrided on two sides using a 5 atm pressurized gas at 530 °C for five hours. The nitrided sample was characterized by means of microhardness, X-ray diffraction, scanning electron microscopy, and
Yang R   +5 more
europepmc   +2 more sources

Effect of dressing with form grinding wheel on grinding surface integrity of 18CrNiMo7-6 steel

open access: yesJin'gangshi yu moliao moju gongcheng, 2023
In order to explore the influence of dressing process parameters, such as dressing depth ad, axial feed speed fd and dressing speed ratio qd, on the grinding surface integrity of 18CrNiMo7-6 gear steel, orthogonal experiments were conducted for shaping ...
Wei GAO   +4 more
doaj   +1 more source

Loading capacity of POM gear under oil lubrication

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2022
As one of the most common polymer materials, POM gear has been widely applied in automatic transmission boxes, intelligent house devices, etc. Though the mechanical properties of POM material have been extensively studied, the loading capacity and ...
Bingbing ZHONG   +4 more
doaj   +1 more source

Effect of carburizing process on high cycle fatigue behavior of 18CrNiMo7-6 steel

open access: yesJournal of Materials Research and Technology, 2022
Carburizing heat treatment is widely used in the fabrication of gears to improve their fatigue performance. The effects of carburizing process on the material properties surface hardness, residual stresses, retained austenite of case-hardened 18CrNiMo7-6 ...
Shengwei Qin   +4 more
doaj   +1 more source

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