Manufacturers of grinding steel rods

65Mn material mill steel rod used in coal chemical industry and other industries

At present, more than 90% of the manufacturers in the coal chemical industry are using heat-treated 65Mn round steel. There is also a small number of 42CrMo steel rods, in fact, this material of steel rods is more cost-effective, can only accept its price manufacturers are not many.

Generally 65Mn ordinary round steel hardness between HRC15-23 degrees heat treatment of steel rods between HRC45-55.

The following are the standards for heat treatment of 65Mn mill steel rods:

Diameter: ￠50MM-65MM-75mm deviation in line with GB/T699-1999 standard

Grinding ratio: 3:4:3 (Note: not all the rods can be added to the initial grinding. After winning the bid for the supply of detailed information, our company can go to the site for guidance, and the diameter of steel rods in each mill needs to be purchased about 20% of the total rod quantity for subsequent rod addition)

Length: 5850mm deviation +-10mm (Explanation: the steel rod length is 150mm shorter than the inner diameter length of the mill as the size, too long can not be loaded in, too short will lead to disorderly rod) can be customized according to the size of the rod mill.

Non-straightness: 1.5-3mm/m

Deep processing technology: tempering heat treatment

Hardness: HRC45-55 (hardness is controllable, the hardness range can be adjusted according to customer requirements)

Raw material: 60Mn/65Mn (according to GB/T699-1999 standard)

Test items: ① composition ② surface ③ hardness ⑤ diameter ⑥ length

Note:

1. Ask the manufacturer to provide the material list of the steel mill to ensure that it is the 65Mn material of the large steel mill

2. Go to the site to test the hardness of the steel rod to ensure that it is the product after heat treatment (you can also buy a portable detector about 2500-3000)

3. Sign the bid to record the broken rate of steel rods, and there should be a compensation agreement for the excess part.

Generally, the price of steel bar raw materials is relatively transparent, that is, on the basis of raw materials, plus the heat treatment money and the management cost of the enterprise, generally between 1000-1200, there should be concessions for large quantities, you can also call me.