Ratio coefficient

Number

Factors

Experimental results

JHCJ-1

TW-80

JHCL-3

CP/˚C

Reduction rate of lubrication coefficient /%

Reduction rate of linear expansion/%

1

4

1

2

36.6

64.8

30.9

2

4

2

3

46.8

72.2

32.9

3

4

3

4

62.5

70.4

36.0

4

5

1

3

36.4

66.7

37.4

5

5

2

4

42.2

75.9

42.6

6

5

3

2

57.5

72.2

42.0

7

6

1

4

34.2

64.8

42.9

8

6

2

2

44.7

70.4

41.3

9

6

3

3

56.3

72.2

44.1

K_1j

207.4/99.8

196.3/111.2

207.4/114.2

Note: K_ij represents the sum of 3 test results corresponding to i level in the j column, specifically expressed as the sum of the reduction rate of lubrication coefficient/the sum of the reduction rate of linear expansion; K_ij = K_ij/3

K_2j

214.8/122

218.5/116.8

211.1/114.4

K_3j

207.4/128.3

214.8/122.1

211.1/121.5

`K_1j

69.1/33.3

65.4/37.1

69.1/38.7

`K_2j

71.6/40.7

72.8/38.9

70.4/38.1

`K_3j

69.1/42.8

71.6/40.7

70.4/40.5

R_j

2.5/9.5

7.4/3.6

1.3/2.4

$R_j={\overline{K}}_{ij}\left(\max \right)-{\overline{K}}_{ij}\left(\min \right)$