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January

2013

101

Article

3.3.2.2 The comprehensive energy consumption of new

roll manufacture process B of SDSF

Total comprehensive energy consumption of finished product

per ton is 1.246 ton standard coal, is only

¼

that of finished

product of similar forging roll per ton at home and abroad, and

the utilisation coefficient of material is 77.5 per cent, is more

than two times that of similar forging roll at home and abroad.

Manufacturing finished roll of per ton can save of 1.527 ton

of metal material. The compared comprehensive energy

consumption of new roll manufacturing process with

that of similar forging roll at home and abroad.

4 The compared property

of SDSF new high

chromium alloy roll with

that of similar roll at

home and abroad

4.1 Chemical composition

The chemical composition of SDSF new high

chromium alloy roll is different from that of similar

roll of other countries in the world. At the present

3.3.1.2 The accounting result of

comprehensive energy

consumption for roll

production process A of

SDSF

Total comprehensive energy con-

sumption of per ton of finished product

is 0.8794 ton standard coal, is only

1

/

3

of finished product consumption of per

ton of similar forging roll at home and

abroad, and the utilisation coefficient

of material is 87.5 per cent, is twice

that of forging roll of similar product

at home and abroad. Manufacturing

every ton of finished roll can save of

0.704 ton of metal material.

3.3.2 The welding pipe roll with

deep hole shape

The sizing roll of world’s biggest

Ø660HFW/ERW welding pipe mills

as example: the weight of finished

product is 1.258 ton.

3.3.2.1 The accounting result of comprehensive energy

consumption of forging roll manufacturing

process of similar product at home and

abroad

Total comprehensive energy consumption of finished product

per ton is 4.407 ton standard coal, utilisation coefficient of

material is 35.5 per cent.

Figure 2

:

The drawing of the world’s

biggest roll for straightening steel

pipe mill

Figure 3

:

The drawing of

sizing roll of world’s biggest

Ø660HFW/ERW welding

pipe mills

Table 1

:

The comparison of comprehensive energy consumption of finished roll production per ton

Manufacturing process

Comprehensive energy consumption

(ton standard coal)

Utilisation coefficient of material

(%)

Forging roll manufacturing process

of similar product at home and abroad

2595–4407

35.5–54.1

SDSF new roll manufacturing process A

879.4

87.5

SDSF new roll manufacturing process B

1246

77.5

Figure 1

:

Straightening steel pipe roll, HFW/ERW welding pipe roll and cold roll formed steel roll