Rolling Machine for Grinding Ball with Hardness up to 60 ~ 67HRC

• After-sales Service: Yes
• Warranty: 1 Year
• Rolling Shape: Round Ball
• Product: Steel Ball
• Roller Position: Horizontal
• Roller Number: Two-High
• Layout: Skew
• Type: Hot Rolling Mill
• Transport Package: Wooden Pallet
• Trademark: FMXK
• Origin: Jiangsu, China
• Production Capacity: 1000000tons/Year

Product Description

Product Description:

The advantages of rolled steel balls:

For casting steel balls, forging steel balls, and rolling steel balls, due to different production processes, there are many unconquerable disadvantages in casting steel balls and forging steel balls. Rolled steel balls have obvious advantages compared with cast steel balls and forged steel balls, especially in terms of quality.

Hot rolled steel ball quality advantages:

• Good shape, small geometric tolerance, stable quality.

• Low wear rate and long service life.

•Steel ball hardness up to 60 ~ 67HRC, balanced internal and external hardness, hardness difference <5HRC.

• Impact toughness up to 12~35J/cm³.

• Large proportion (usually greater than 7.85J/cm3).

The direction of development of grinding steel ball industry, according to the Standing Information Center, there are hundreds of big or small steel ball manufacturers currently excluding the exporters, and the annual domestic consumption of grinding balls (forged steel balls, cast steel balls) is over 5 million tons.

As a brand-new rolling process technology, hot rolling ball grinding ball is a technological breakthrough in grinding ball manufacturing industry and is gradually replacing cast grinding steel balls and forged steel balls. In addition to product quality advantages, hot-rolled balls have the following characteristics: 1. Hot-rolled balls have all the advantages of steel, and they become high-quality ball balls after heat treatment. 2. there is no need for manual operation, and less interference from human factors;

Due to the advancement and superiority of hot rolling balls in the production process, product quality, practical use, production costs, energy consumption, environmental protection, etc., together with the current status of grinding steel ball in China, the rolled grinding steel ball will replace the cast steel balls and forged steel balls, has become the development direction of the grinding steel ball industry.

Steel Ball Hot Rolling Mill:

Steel ball hot rolling is a new skew rolling process technology and it is a technological breakthrough in grinding steel ball rolling mill manufacturing, and it has been gradually replacing the casted steel balls.

Main Process:Round bar steel→ Feeding device→ Induction heating furnace ( 900ºC to 1100ºC )→ Rolled into formed steel ball→ Automatic steel ball screening and dividing equipment→ Annealing device→ On-line tempering → Natural cooling→ Secondary tempering (optional)→ Packaging

Steel ball hot rolling process description:

<1> Billet stacking: Stock the steel ball billets in the stockyard;

<2>Feeding: The billets are normally lifted by the overhead crane to the feeding rack, and pulled out onto the conveyor roller by the automatic turn-over mechanism.

<3> Induction heating: The billets are heated by the medium frequency induction furnace , fully automatic PLC controlled;

<4>Rolling: The speed of main rolling motor can be adjusted in variable frequency to meet the production requirements of steel balls of different specifications and match with the induction heating furnace;

<5> Conveyor delivery: The steel ball is conveyed to the screening section; the transmission motor adopts variable frequency speed regulation, which can help adjust the pre-cooling temperature of the steel ball;

<6> Screening: The imperfect steel balls are screened out by the screening machine and run into the waste container;

<7>Uniform temperature slow-cooling: Slow cooling chain motor adopts variable frequency speed regulation, so that the high temperature steel ball can be cooled and can be cooled to the quenching temperature by adjustment, meanwhile the steel ball temperature gets uniformity;

<8> Steel ball dividing: The after-screened ball is divided into two by dividing machine , and run into the quenching tank;

<9> Quenching: The steel ball is quenched by two parallel installed quenching machines, and the quenched spiral-groove motor adopts variable frequency speed regulation, and adjusts the outlet water temperature after the ball is quenched;

<10> Collection: The steel balls are collected by the collection box;

<11>Off-line tempering: Tempering treatment is processed by the off-line resistance furnace;

<12> Cooling: Cool the steel balls to normal temperature;