Heat treatment technology application effect
Most favorable price : sales@hellerbearings.com
(2) hardness stability, good uniformity, BL transition is a slow process, the general GCr15 steel required 4h GCr18Mo steel required 5h??, the rings in the nitrate isotherm for a long time, the surface of the heart, organizational change almost at the same time, hardness stable uniformity, general GCr15 steel BL quenching hardness of 59 ~ 61HRC uniformity ≤ 1HRC, unlike the quenching ring wall thickness slightly larger than the low hardness, soft spots, and poor uniformity.
(3) to reduce quenching, grinding cracks in railway rolling mill bearing production, due to ring size and weight, oil quenching M organizations brittle, high hardness so that after quenching, often take a strong cooling measures, resulting in quenching micro-cracks; BL quenching, BL organization is much better than the M-organization toughness, while the surface of the compressive stress of up to -400 ~-500MPa, greatly reducing the tendency of quenching cracks; offset the grinding surface stress part of the grinding stress, overall stress levels, greatly reducing the grinding cracks.
(4) bearing service life under the impact loading of the railway, mill bearing, used by the M after quenching, the main failure in the form of: sets of cracks within the assembly during use by the impact of outer ribs off the block, the inner fragmentation, and isothermal quenching bearing impact toughness, and surface compressive stress, regardless of sets of cracks within the assembly, or use the process of coat ribs off blocks within the set of fragmentation tendency is greatly reduced, and the lower edge of the roller stress concentration. Therefore, upon isothermal quenching quenching than M, the average life expectancy and reliability improved.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
We can provide free samples . Please contact Email for any inquiries
GCr15 steel range of applications (1) to expand the general GCr15 when the quenching of steel M ferrule effective wall thickness of 12mm below BL quenching saltpetre cooling capacity, the use of a stirring string move, add water, ringThe effective wall thickness can be expanded to about 28mm.(2) hardness stability, good uniformity, BL transition is a slow process, the general GCr15 steel required 4h GCr18Mo steel required 5h??, the rings in the nitrate isotherm for a long time, the surface of the heart, organizational change almost at the same time, hardness stable uniformity, general GCr15 steel BL quenching hardness of 59 ~ 61HRC uniformity ≤ 1HRC, unlike the quenching ring wall thickness slightly larger than the low hardness, soft spots, and poor uniformity.
(3) to reduce quenching, grinding cracks in railway rolling mill bearing production, due to ring size and weight, oil quenching M organizations brittle, high hardness so that after quenching, often take a strong cooling measures, resulting in quenching micro-cracks; BL quenching, BL organization is much better than the M-organization toughness, while the surface of the compressive stress of up to -400 ~-500MPa, greatly reducing the tendency of quenching cracks; offset the grinding surface stress part of the grinding stress, overall stress levels, greatly reducing the grinding cracks.
(4) bearing service life under the impact loading of the railway, mill bearing, used by the M after quenching, the main failure in the form of: sets of cracks within the assembly during use by the impact of outer ribs off the block, the inner fragmentation, and isothermal quenching bearing impact toughness, and surface compressive stress, regardless of sets of cracks within the assembly, or use the process of coat ribs off blocks within the set of fragmentation tendency is greatly reduced, and the lower edge of the roller stress concentration. Therefore, upon isothermal quenching quenching than M, the average life expectancy and reliability improved.
