bhn hardness of high chrome mill balls


(b) HARDNESS: When tested in accordance with IS 1500/1983 the hardness at any point across the section of the ball is more than 375 BHN.

products | BLUE STAR MALLEABLE Pvt Ltd.

Our High Chrome Grinding Media Balls are well appreciated by our customers because of Hardness :- 58 HRC to 68 HRC Hardness :- 375 BHN to 500 BHN

Steel Balls - El Stomana Ltd

Customers require high quality steel balls for effective grinding. A team of Elstomana Surface hardness as per Rockwell – HRC ( Brinell – HB ) , not less than:.

Grinding Balls and Other Grinding Media: Key consumables

25 Jan 2021 Their outer crust is hard (typical Brinell hardness > 450). Cast grinding balls cannot sustain the high impact of SAG mill crushing forces. such as cylpebs, boulpebs, or high-chromium-cast balls, taking into account the total


In an idealized cube of high Cr-white iron, the randomly oriented rods of With small castings such as grinding balls, which can be shaken out of the Subzero treatment substantially raises the hardness, often as much as 100 Brinell points.

CN102676909B - Method for manufacturing high-chrome cast

Method for manufacturing high-chrome cast iron grinding balls 3 is the hardness contrast of the wear-resistant ball under different heat treatment technique;.

bhn hardness of high chrome mill balls -

High Chrome Steel Balls can be used for many different appli ions. They are available in two grades—10–13% chrome surface hardness ≥ 60 HRC, core

Hyper Steel Grinding Media Balls - Suhani Metacast Pvt. Ltd.

Fabricated using high quality material such as metals & alloys and advanced Hardness: When tested in accordance with IS 1500/1983 the hardness at any point across the section of the ball is more than 375 BHN. Hyper steel Grinding Media Balls and Cylpebs as per IS 6079-1989 Chromium, 1.50-2.00, 1.50-2.00.

standard hardness for grinding ball

Flaking of surface of steel ball subjected to repeated impacts ••••••••••••• Brinell According to national standards, high chrome ball hardness must be not less

Download article - Paper Title (use style: paper title)

development aims to make white cast iron material for ball mill of high impact and hardness needed to be able to produce Mn = 0.56%, Ni = 0.05%, Cr = 16.17%, Mo = 0%. The hardness test was carried out by using Brinell Hardness.

SAG, Ball or Horizontal Grinding Mill Wear Parts

The materials casted range from Martensitic Chrome-Moly steels with a 350 to 450 BHN hardness to High Chrome white irons ranging from 450 to over 650 BHN

BHN - Brinell Hardness Number - Engineering ToolBox

The Brinell hardness test of metals and alloys. by applying a known load to the surface of the tested material through a hardened steel ball of known diameter.

Wear Tests on Grinding Balls - 911 Metallurgist

Ferrous grinding balls constitute the major portion of this tonnage. the normalized high carbon, low alloy steels. Microstructure seems to Cr / Mo I Si I Hardness (Bhn) I Abrasion Factor 1 Hardness (Bhn) Abrasion Factor. Analysis. Per Cent.

Alloy data sheet high chrome white iron 25% | Penticton Foundry

13 Jan 2016 ASTM A532 Class III Type A is a high alloy martensitic chrome white iron with excellent abrasion resistance. Brinell (depends on thickness) chute liners, ball mill liners (and lifter bars), slurry pumps, frac pumps, Full through-hardness can be obtained in 8 inch sections via alloying and heat treatment.

Hyper Steel Grinding Media Balls - Mittal

An ideal Hyper / High Chrome Alloys should reflect following micro structural the hardness at any point across the section of the ball is more than 375 BHN.

The Role of Retained Austenite on the Performance of High

high chrome white cast iron (HCWCI) and carbidic austempered nodular iron (CANI) Hardness traverse values across the diameter of the grinding balls . Table C. Hardness values in Brinell (HB) for the high chromium white cast iron.

Laboratory Tests of Spalling, Breaking, and - CDC stacks

Brinell hardness rpm revolution per the balls were evaluated for high-load abrasive wear. The alloys in- of hardness and microstructure on impact wear and abrasive wear are dis- cussed- cial mills. Spalling and broken test balls were found in the commercial mill, Cr white cast iron, the number of impacts to cause

An Overview on Types of White Cast Irons and High

Whit cast irons, and specifically high chromium white cast irons, have been the abrasion resistance of, say the grinding balls in a ball mill, often not only a Brinell hardness and chemical composition of HCWCI (AS 2027:2007) [11] and [24].

Liners | Shri Balaji

The key to good performance of a Tube mill/Horizontal mill is the liners. They not only cover the Hardness, 229 BHN Max, 229 BHN Max, 229 BHN Max, 229 BHN Max, 229 BHN Max Grades (Major) of High Chrome In the secondary grinding, where ball mills are used, liners in White Iron/ Hi-chromium are supplied.

Relationship between microstructure, hardness, impact

and retained austenite. Medium chromium cast iron ball type in the heat-treated condition eter ball mills, the high manganese steel became the focus of many of the early BHN) is also expensive to produce. High chromium cast irons


The mill is charged with Grinding Balls, which performs the function of grinding. High Chrome Grinding Media Balls Hardness, 375-415 BHN, 375-415 BHN

Scanned Document - NTPC Vendor's Portal - NTPC Limited

Sub: Qualifying Requirement for Vendor Enlistment for supply of Grinding Ball for Ball-and-Tube type coal Pulveriser. special profiled high chrome liner (with Chromium content of 22-28% and hardness of 600 BHN minimum). The bidder

Ni-Hard - Nickel Institute

As grinding balls, mill liners, pulverizer rings give high hardness and Loescher roller pulverizer mill with Ni-Hard 4 rollers (each 3 tons) and table. Used for

Grinding Media Balls and Cylpebs - Grinding Balls

Manufacturer of Grinding Media Balls and Cylpebs - Grinding Balls, Grinding High Chrome Cast (11%-28% Cr); Hyper Steel (as per IS 6079); Non Magnetic Steel Grinding Balls. Hardness- Hardness at any point more than 375 BHN

Effect of molybdenum, vanadium, boron on mechanical

Characterization of these grinding balls was conducted by using some testing has high hardness, especially after heat treated process, can reach 650-750 BHN Good combination in toughness and hardness of high chromium white cast

Engineering Handbook

Generally, the higher the carbon content, the more difficult carbon steel is to machine. Chrome alloy steels, such as 4130, 4140, and 4340 are so named because The Rockwell C, or RC, scale, and the Brinell hardness (Bhn) scale are used used on material having a BHN not over 450, a Hultgren ball on material not


Independent of the chrome-content of the grinding balls, grinding media with 59 Rc hardness (comparable approximately to 600 BHN), as exemplified by four

GM Balls – Atul Engineering

Hi- Chrome Grinding Media Balls: the hardness is found to be more than 375 BHN; Microstructure: Microstructure is free from continuous carbide network


primary grinding of the same ore. High chromium balls may be economical for high levels of corrosive wear, by variations in chemistry, hardness or structure [2]. Quality are the Brinell, Rockwell and Vickers hardness tests. Hardness testing

Grinding Ball - Hyper Steel Grinding Media Ball Manufacturer

High Chrome Grinding Media Balls users are normally mentioning only chemical composition and hardness of grinding Media in their enquiry which is not