Φ2.6m Rod Mill Liner Manufacture

One of our customers had asked us to manufacture Ni-hard mill liner for his Φ2.6m Rod Mill. Rod mill uses steel rods as the grinding media in tumbling mills is an efficient means to feed ball mills a product finer than could be made in a crusher but coarser than could be made in a ball mill. The principal use for rod mills, which were invented to make ball mill feed in a wet-grinding rod mill-ball mill circuit.

Contents hide

1 Φ2.6m Rod Mill Liner Details:

2 Material Selection

3 Φ2.6m Rod Mill Liner Production Process

4 Quality Control

5 Contact Us

Φ2.6m Rod Mill Liner Details:

Material: Ni-hard Cast Iron

Hardness:≥HRC55

Impact Value: More than AK5J

Application: Mining Industry, Cement Industry, and others

Certification: ISO9001,CE, ISO14001, OHSAS18001 etc.

Warranty Time: 1 year

Material Selection

Except for Ni-hard material, Qiming Machinery also supplies other materials for different working conditions:

Manganese Steel
Low Carbon Chrome Moly Steel
High Carbon Chrome Moly Steel
High Chrome Irons Cr Iron
Chrome Moly White Irons

The different material details in the following:

Item	High Cr White Iron	High Cr Alloy Steel	High Mn Steel	Ni-hard Cast Iron
C	2.4-3.2	1.1-2.2	0.9-1.3	2.4-3.6
Si	0.6-1.2	0.6-1.2	≤0.8	≤0.8
Mn	0.5-1.0	0.5-1.0	11.0-18.0	≤2.0
Cr	12.0-30.0	11.0-30.0	1.5-2.5	1.5-10
S	≤0.04	≤0.04	≤0.04	≤0.15
P	≤0.06	≤0.06	≤0.06	≤0.15
Mo	0.1-3.0	0.1-3.0	≤1.0	≤0.1
Cu	0.1-1.0	0.1-1.0	–	–
Ni	0-0.3	0-0.3	–	3.3-10
Re	–	–	–	–
Equivalent Specification	GB/T8263-1999 AS2027 Cr27 AS2027 CrMo 15/3 AS2027 CrMo 20/2/1 ASTM A532 Class Ⅲ Type A 25%Cr ASTM A532 Class Ⅱ Type B 15%Cr-Mo BS 4844 3E DIN1695 NFA32401		GB/T5680-1998 DL/T 681-1999 JIS G 5153-1999 ASTM A128 DIN GX120Mn12 AFNORZ120Mn12	GB/T8263-1999 AS2027/Ni-Cr1-550 AS2027/Ni-Cr2-500 AS2027/Ni-Cr4-500 AS2027/Ni-Cr4-600 AS2027/Ni-Cr4-630 ASTM A532 1-A,B,C,D ASTM A532 2-A,B,C,D,E ASTM A532 3-A
Material Type	Martensite Matrix		Austenitic Mn Steel	–
Hardness	HRC≥56		HB≤300	HRC≥56
Impact Value	AK≥4J		AK≥80J	–

Φ2.6m Rod Mill Liner Production Process

Normally, we use the sand casting method to cast those mill liners, the production process steps as the following:

Our sale manager checks with the customer about the orders;
Our engineer team to do process design;
Purchase the raw material, and checking or making patterns;
Inspection of the raw material;
Melting by middle-frequency induction furnace;
Lable analysis by a spectrometer before casting, and molding;
Deoxygenating, slag-removal, and tapping;
Pouring;
Opening and fettling;
Surface and dimensional checking, if not pass, the parts need scrap casting back to the furnace;
Heat treatment;
Machining, checking, and printing

Quality Control

All the wear parts must pass our strict quality control system in the production process. After the finish the goods, we will also give customers quality reports.