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Grades Recommended for Use in Different Stands

Table of grades recommended for use in different stands

Grade series YGR YGH
Mill classes A B C A B C
Stands of prefinishing
mill
1 1 YGR60 YGR60 YGR60 YGH60 YGH60 YGH60
2 2 YGR60 YGR60 YGR60 YGH60 YGH60 YGH60
3 3 YGR55 YGR55 YGR60 YGH55 YGH55 YGH55
4 4 YGR55 YGR55 YGR55 YGH55 YGH55 YGH55
Stands of finishing mill 5 5 YGR40 YGR45 YGR45
(YGR55)
YGH45 YGH55 YGH55
6 6 YGR40 YGR45 YGR45 YGH45 YGH55 YGH55
7 7 YGR40 YGR45 YGR45 YGH40 YGH45 YGH55
8 8 YGR40 YGR45 YGR45 YGH40 YGH40 YGH55
Grade series YGR YGH
Mill classes A B C A B C
Stands of finishing mill 9 o o YGR30 YGR40 YGR45 YGH30 YGH40 YGH45
10 o o YGR30 YGR40 YGR45 YGH30 YGH40 YGH45
11 o o YGR30 YGR40 YGR40 YGH30 YGH40 YGH45
12 o o YGR30 YGR40 YGR40 YGH30 YGH40 YGH45
13 o o YGR20
(YGR25)
YGR25
(YGR30)
YGR40 YGH20
(YGH25)
YGH25
(YGH30)
YGH40
14 o o YGR20
(YGR25)
YGR25
(YGR30)
YGR40 YGH20
(YGH25)
YGH25
(YGH30)
YGH40
Stands for reducing and sizing mill 15 o o YGR40 YGR45
(YGR40)
YGR45 YGH40 YGH45
(YGH40)
YGH45
16 o o YGR40 YGR45
(YGR40)
YGR45 YGH40 YGH45
(YGH40)
YGH45
17 o o YGR20
(YGR25)
YGR30
(YGR25)
YGR40
(YGR30)
YGH20
(YGH25)
YGH30
(YGR25)
YGH40
(YGR30)
18 o o YGR20
(YGR25)
YGR30
(YGR25)
YGR40
(YGR30)
YGH20
(YGH25)
YGH30
(YGR25)
YGH40
(YGR30)
Note classes A,B,C stand for excellent, good, bad working conditions of rolling mills respectively.
( )is the second choice.

Recommended applications of grades for carbide roll rings

Grade Recommended applications
YGH10

Maximum hardness, excellent wear resistance in the senes. Used in the last 1-2 stands of good high speed rolling mills for rolling common and hard steel bars.

YGH20

Maximum hardness, excellent wear resistance in the senes. Used in the last 1-2 stands of good high speed rolling mills for rolling common and hard steel bars.

YGH25

Higher wear resistance, moderate impact resistance in the series. Used in the last 1-3 stands of good high speed finishing rolling mills for rolling common and hard steel bars.

YGH30

Moderate wear resistance and impace resistance, good for general purposes. Used in the last 1-4 stands or all stands of finishing mills.

YGH40

Best for general purposes. Used in the front stands of good rolling mills and in the rear stands of common rolling mills.

YGH45

Used in the first and second stands of finishing rolling mills and in the stands of per-finishing rolling mills. For every stand of rolling lines for low speed rolling , low precision and unstable operations.

YGH55

High binder content in YGHseries, good toughness and thermal crack reslstance. Used in the stands of pre-finishing rolling mills and for roll rings for hot rolling of rebars.

YGH60

Maximum binder content in YGH series, good toughness and thermal crack resistance. Used in the stands of pre-finishing rolling mills and for roll rings for hot rolling of rebars.

Grade Recommended applications
YGR10

High wear resistance and corrosion resistance. Used in the last 1-2 stands of finishing mills.

YGR25

High wear resistance and corrosion resistance. Used in the last 1-3 stands of finishing mills.

YGR30

Good toughness wear resistace, corrosion resistance and thermal crack resistance. Used in the middle and rear stands of finishing mills.

YGR40

Good toughness and thermal crack resistance, good for general purposes. Used in most stands of the finishing mills and in the rear stands of common mills.

YGR45

Good toughness and thermal crack resistance. Used in the front stands of finishing mills.

YGR55

Good impact resistance. Used in the stands of pre-finishing rolling mills for hot rolling rebars and they can be machined with turning and milling.

YGR60

Good impact resistance. Used for hot rolling rebars and in the first and second stands of prefinishing rolling mills and they can be machined with turning and milling.



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