failure analysis on the gcr15 bearing steel and the 20crmo
Structural Reliability of Plain Bearings for Wave Energy
Intergranular brittle fracture originating at the bearing surface is according to an important failure mode for GCr15 steel bearings due to their relatively high amount of carbon This article considers this failure mode as the bearing material of the considered bearing types consisting of high-carbon chromium bearing steel GCr15 and PTFE-based
Company Overview
We focus on manufacuring Deep Groove Ball Bearing Thrust Ball Bearing Needle Roller Bearing Linear Bearing Flange Bearing etc ( including metric and inch system and non-standard) The main materials are Gcr15( Chrome steel) and stainless steel with advanced production facilities excellent technical team and rich experience in production
Practice for Production of High
Compared with EAF process BOF process for producing bearing steel has many advantages such as higher steel cleanliness better product quality higher production efficiency and lower cost The GCr15 steel grade had been produced in Bengang steelmaking works by adopting BOF—secondary metallurgy(LF+RH)—bloom caster process All the chemical elements of GCr15 steel reached the
Rolling contact fatigue of silicon nitride bearing balls
Oct 24 2008The fatigue properties of GCr15 steel balls and two kinds of Si 3 N 4 ceramic balls (GSN-200 and NBD-200) produced with different technologies were compared Ball surfaces were examined after failure with optical microscope and scanning electron microscope (SEM) It was identified by tests that the failure mode of ceramic balls was surface spall
A cumulative damage model for fatigue life estimation of
Mar 14 2012The model is used to estimate the fatigue life and equivalent crack growth rate for a bearing steel (GCr15) of present investigation and four high‐strength steels in the literature The equivalent crack growth rate of FGA is calculated to be of the
4140 4130 steel grades in China Equivalent Material
Carburized bearing steel G20CrMo G20CrNiMo G20CrNi2Mo G20Cr2Ni4 G10CrNi3Mo G20Cr2Mn2Mo etc DESHENGRUI Machinery is a professional CNC manufacturing and sheet metal fabrication company including CNC machining services CNC turning service CNC milling services CNC drilling services laser cutting services stamping services Die casting
Investigation on Friction and Wear Properties of High
The ceramic steel-440C steel-GCr15 and steel-304 is the most commonly used as bearing material The inner and outer ring of some high-temperature bearings is steel but the ball is ceramic Therefore we study the friction properties of several bearing materials
Failure Analysis of Fatigue Fracture on the Outer Ring of
Keywords Bearing failure Failure analysis Fatigue Fracture Introduction Rolling-element bearings with diverse variants including ball needle cylindrical roller spherical roller tapered roller etc are the most widely used type of bearings because of their excellent tradeoff between size cost and performance [1]
PAPER OPEN ACCESS Analysis of Failure Effect of Cage
Analysis of Failure Effect of Cage Thickness on Spherical Roller Bearings method and theoretical calculation to study the characteristics of the deep groove ball bearing cage and the steel ball during operation[3] The important influence on the cage and the relationship between the GCr15 7830 2 19E+11 273 06 54 611 30 0 3
China 1 2344/AISI H13/JIS SKD61 for Spring Steel Mould
Die Steel Tool Steel Mould Steel manufacturer / supplier in China offering 1 2344/AISI H13/JIS SKD61 for Spring Steel Mould Flat Steel 1 2357 S7 635 Calmax Cold Work Die Steel Cold Work Tool Steel Shock Resistant Steel Cheap Price High Quality D3 1 2080 Cr12 S7 1 2357 1 2767 1 2510 O1 Die Alloy Tool Steel Plate Sheet Mould Flat Bar and so on
A Numerical Model for Life Scatter in Rolling Element Bearings
Dec 26 2007Fatigue lives of rolling element bearings exhibit a wide scatter due to the statistical nature of the mechanisms responsible for the bearing failure process Life models that account for this dispersion are empirical in nature and do not provide insights into
40Cr Alloy Structure Steel
OTAI SPECIAL STEEL Supply in GB 40CR steel round bar steel plate sheet square bar flat bar hexagonal Bar pipe/tube since 2007 our steel stock more 1000tons GB 40CR alloy Steel is a high quality Quenched and Tempered Alloy Structural steel It belong to the high quality low carbon Low alloy chromium molybdenum nickel case hardening steel
Investigation on Friction and Wear Properties of High
The ceramic steel-440C steel-GCr15 and steel-304 is the most commonly used as bearing material The inner and outer ring of some high-temperature bearings is steel but the ball is ceramic Therefore we study the friction properties of several bearing materials with different temperature have practical significance In this paper to
Rolling contact fatigue of silicon nitride bearing balls
Oct 24 2008The fatigue properties of GCr15 steel balls and two kinds of Si 3 N 4 ceramic balls (GSN-200 and NBD-200) produced with different technologies were compared Ball surfaces were examined after failure with optical microscope and scanning electron microscope (SEM) It was identified by tests that the failure mode of ceramic balls was surface spall
Mu Sen Li
Abstract: Failure analysis on the GCr15 bearing steel and the 20CrMo carburized steel nuts was performed after two sets of fatigue tests of GD80201100 ball screw pair By means of scanning electron microscopy observation energy dispersive analysis and microhardness testing it is found that there is an obvious indentation slight pitting and
Bending Fatigue of Carburized Steel at Very Long Lives
W Li T Sakai Q Li L Lu and P Wang Reliability Evaluation on Very High Cycle Fatigue Property of GCr15 Bearing Steel Int J Fatigue 2010 32 p 1096-1107 CrossRef Google Scholar 32 K Tanaka and Y Akiniwa Fatigue Crack Propagation Behavior Derived from S
Dr Dehua Yang – Ebatco
Dehua Yang and Xushou Zhang The wear damage process of the N+ B ion implanted layer of GCr15 bearing steel Tribology (in Chinese) 13 (1993) 131-136 46 Dehua Yang Qunji Xue Xushou Zhang Study of the N+B ion implanted layer of GCr15 bearing steel by XRD AES and XPS Nuclear Techniques (in Chinese) 16(1993) 52-56
Process Quality
GIS premium bearings are made from the highest quality materials We use steel from the best steel sources available in the world The high carbon bearing steel is vacuum degassed SAE 52100 or GCr15 Vacuum degassing yields stronger steel with less impurities State Of The Art Grinding
40Cr Alloy Structure Steel
OTAI SPECIAL STEEL Supply in GB 40CR steel round bar steel plate sheet square bar flat bar hexagonal Bar pipe/tube since 2007 our steel stock more 1000tons GB 40CR alloy Steel is a high quality Quenched and Tempered Alloy Structural steel It belong to the high quality low carbon Low alloy chromium molybdenum nickel case hardening steel
Electrical bearing failures in electric vehicles
Jan 23 2020In modern electric equipment especially electric vehicles inverter control systems can lead to complex shaft voltages and bearing currents Within an electric motor many parts have electrical failure problems and among which bearings are the most sensitive and vulnerable components In recent years electrical failures in bearing have been frequently reported in electric vehicles and the
Process Quality
GIS premium bearings are made from the highest quality materials We use steel from the best steel sources available in the world The high carbon bearing steel is vacuum degassed SAE 52100 or GCr15 Vacuum degassing yields stronger steel with less impurities State Of The Art Grinding
Rolling contact fatigue of silicon nitride bearing balls
Oct 24 2008The fatigue properties of GCr15 steel balls and two kinds of Si 3 N 4 ceramic balls (GSN-200 and NBD-200) produced with different technologies were compared Ball surfaces were examined after failure with optical microscope and scanning electron microscope (SEM) It was identified by tests that the failure mode of ceramic balls was surface spall
2
Abstract This paper presents a failure analysis of a bearing sleeve made from GCr15 steel The bearing sleeve fractured when being interference tted The fracture surfaces were observed by visual and SEM The crack initiated from the top end of the bearing sleeve and propagated towards the bottom Intergranular brittle fracture is the main







