Low-chromium alloy wear-resistant steel ball with compound wear-resistant layer and manufacturing method thereof
A manufacturing method and chrome alloy technology are applied in the field of wear-resistant steel ball manufacturing, which can solve the problems of short service life, high out-of-roundness, poor wear resistance, etc. Overcoming the effect of insufficient toughness
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[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0021] The invention relates to a low-chromium alloy wear-resistant steel ball with a composite wear-resistant layer, which includes a carbon steel matrix and low-chromium cast iron. The weight percentages of the components of the low-chromium cast iron are as follows: C: 3.2-4.1%, Cr: 0.9- 2.3%, Mn: 0.8~1.3%, Si: 0.2~0.9%, Ti: 0.03~0.08%, P<0.02%, S<0.01%, B: 0.003~0.01%, Cu: 0.26~0.57%, Mo: 0.09~0.18%, V: 0.08~0.25%, Re: 0.05~0.12%, rare earth elements: 0.1~0.19%, alkaline earth...
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