1. The difference in material itself: the material of the forged-rolled steel ball is high-quality round steel or high-quality composite steel, and its C content is less than 1.4, so it is called steel ball after forging and rolling; while the basic material of cast ball is scrap steel, which is smelted. Adding alloy iron (Cr-Fe, Mn-Fe) to adjust the composition to achieve a C content of 2.2—3.5, which is actually the composition of iron. Therefore, to be precise, should be called iron balls;

2. Understand the names of the two steel balls, and their physical properties are fundamentally different. Forged-rolled steel balls are made by rolling and deforming a billet several times and then forging (rolling) through a high-temperature variable die, with high density. The density of steel is 7.85Kg/m3, so the physical properties of the steel ball after core-pulling 10*10mm impact toughness is greater than 12j/m; the cast ball is made by smelting, and its density is lower than that of steel, generally around 7.65Kg/m3. After the performance steel ball is core-pulled, the impact toughness of 10*10mm is only 2-6j/m;

In the field of wear-resistant steel balls, there are two major types of steel balls running in ball mills or semi-automatic mills. One is forged steel balls and the other is cast steel balls. Both are grinding steel balls and are desirable for mines and construction. In different fields such as metallurgy, metallurgy, chemical diligence, and cement, the two types of steel balls have commonalities and differences. then, what are the differences between these two types of steel balls:1. The dispute in material itself : the corporeal of the forged-rolled steel ball is high-quality round off steel or high-quality composite steel, and its C contented is less than 1.4, so it is called steel ball after forging and rolling ; while the basic material of vomit ball is bit sword, which is smelted. Adding alloy cast-iron ( Cr-Fe, Mn-Fe ) to adjust the typography to achieve a C content of 2.2 — -3.5, which is actually the composition of iron. therefore, to be accurate, should be called iron balls ; 2. Understand the names of the two steel balls, and their physical properties are basically different. Forged-rolled sword balls are made by rolling and deforming a billet several times and then forging ( rolling ) through a high-temperature variable die, with eminent concentration. The density of steel is 7.85Kg/m3, so the physical properties of the steel ball after core-pulling 10*10mm impact stamina is greater than 12j/m ; the mold testis is made by smelting, and its concentration is lower than that of steel, by and large around 7.65Kg/m3. After the performance sword ball is core-pulled, the impact temper of 10*10mm is only 2-6j/m ;

3. The difference in surface quality: Cast balls are produced using steel molds or sand box molds, with pouring ports, blisters and ring belts on the surface; while are formed by high-temperature forging or die rolling, and their surface is smooth;

4. The hardness distribution is different: For example, 100mm*B2 material steel ball, forged steel ball surface hardness HRC60, core hardness HRC50, the five-point hardness distribution from the core to the surface is a ladder distribution; while the cast steel ball is also 100mm, the surface hardness HRC60 core hardness is HRC57, and the five-point hardness distribution difference from core to surface is between HRC2-3;

5. Different fields of application: the forged steel ball is made of high-quality alloy steel. The mechanical properties of the alloy elements make it have natural corrosion resistance. In addition, the advanced heat treatment process makes the more resistant to corrosion. Under normal conditions, the mill is dry. Both grinding (temperature not greater than 100 degrees) and wet grinding are applicable; cast balls are more suitable for dry grinding. For example, cast steel balls must be used in the cement industry. When used in wet grinding, iron and water are easily brokent by temperature. This is what is usually said that cast balls can be called “heat-resistant” balls, suitable for dry grinding. For example, cement plants can only use cast balls, and forged balls can be called “corrosion-resistant” balls, suitable for wet grinding, beneficiation, etc. Forging balls are more suitable, especially semi-automatic grinders or balls over 100mm.

6. Different heat treatment methods: water quenching (or quenching liquid) is used for forged steel balls, and oil quenching (or wind quenching) is used for casting steel balls.

3. The difference in surface quality : Cast balls are produced using steel molds or sand box molds, with pouring ports, blisters and ring belts on the surface ; whileare formed by high-temperature forge or die roll, and their surface is smooth ; 4. The hardness distribution is different : For exercise, 100mm*B2 material sword ball, forged steel ball surface severity HRC60, core hardness HRC50, the five-point hardness distribution from the core to the coat is a run distribution ; while the roll steel ball is besides 100mm, the surface severity HRC60 congress of racial equality severity is HRC57, and the five-point hardness distribution difference from core to come on is between HRC2-3 ; 5. different fields of lotion : the forge steel ball is made of high-quality debase sword. The mechanical properties of the alloy elements make it have natural corrosion resistor. In summation, the progress heat treatment summons makes themore tolerant to corrosion. Under normal conditions, the mill is dry. Both grinding ( temperature not greater than 100 degrees ) and wet grinding are applicable ; hurl balls are more desirable for dry grinding. For example, cast steel balls must be used in the cement diligence. When used in wet grind, iron and water are easily brokent by temperature. This is what is normally said that cast balls can be called “ heat-resistant ” balls, suitable for dry grate. For example, cement plants can only use casting balls, and forged balls can be called “ corrosion-resistant ” balls, suitable for wet grinding, mineral extraction, etc. Forging balls are more desirable, particularly semi-automatic grinders or balls over 100mm.6. different estrus treatment methods : water quenching ( or quenching liquid ) is used for forge steel balls, and oil quench ( or wind quenching ) is used for casting steel balls .

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