Tungsten carbide roller has characteristics of good wear resistance, high temperature red hardness, thermal fatigue resistance and thermal conductivity and high strength , have been widely used in high-speed wire rod, bar, rebar, seamless steel tubes, etc. Domestic production of tungsten carbide roller materials mostly WC- Co, WC- Co- Ni- Cr two series, and the content of Co, Co- Ni - Cr is in the range of 6wt% ~ 30wt%. From the use of perspective, tungsten carbide rollers has good mechanical properties, its flexural strength up to 2200 MPa or more, shock toughness up (4 ~ 6) × 10^6 J/ m^2, Rockwell hardness (HRA) is up to 78 to 90, widely in the high-speed wire rod rolling process, which is much higher than single-slot chilled cast steel or high speed steel rolls.Tungsten carbide is made of Tungsten Carbide Powder and binder phase (such as drilling, nickel, etc.), and then pressing and sintering, regardless of the conditions under cold rolled or hot rolled has excellent wear resistance, tungsten carbide rollers has been widely used in pre-finishing mill and finishing of high-speed wire rod currently. On the performance of tungsten carbide roller in hot-rolling wire rod , the material must meet the following requirements:
Tungsten carbide roller material design
Tungsten carbide roller category
Tungsten carbide roller production process control Carbide Roller,Carbide Ring,Mill of Rolling Line,Steel Wire Rod,Mill Rolling Finish Stand,Mill Roller Groove Type Luoyang Golden Egret Geotools Co., Ltd , https://www.xtchvof.com
WRY series hot oil pumps are designed on base of advanced oil pumps home and abroad. They have reasonable and compact structure, small size, high efficiency and no oil leakage.
2. Characteristic
Single grade, single suction, cantilever type and foot support are the main sturcture features. The inlet is horizontal and the outlet is vertical. It is installed together with a motor on the base.
2.1 The pump adopts PTEE as the seal. It has good heat adaptablity, seal relibility and no leakage.
2.2 The structure is compact and simple. It requires low maintenance cost and no need cooling
equipment.
2.3 Excellent working performance, high efficiency, low energy consumption, low noise, long workin time.
Parameters & Specification
Â
Item.
Model
Quantity ( m3/h)
Head (m)
Round (r/min)
Power (kw)
Efficiency ( %)
NPSH (m)
Shaft Power
Motor power
1
WRY25-20-120
2
20
2840
0.36
0.55
30
1.2
2
WRY25-20-125
3
20
2840
0.55
0.75
30
1.4
3
WRY50-32-150A
5
25
2840
1.0
1.5
34
1.6
4
WRY50-32-150
8
22
2840
1.1
1.5
43.5
1.8
5
WRY50-32-160
10
25
2840
1.5
2.2
45.2
2.0
6
WRY50-32-170
12.5
32
2900
2.4
3.0
45.7
2.4
7
WRY65-50-170
29
32
2900
3.4
4.0
64.0
2.6
8
WRY65-50-170A
40
25
2900
4.5
5.5
60
2.7
9
WRY65-50-180
20
38
2900
4.0
5.5
52
2.7
10
WRY80-50-170
60
25
2900
6.7
7.5
61
2.9
11
WRY80-50-180
40
40
2900
7.0
7.5
62.1
2.9
12
WRY80-50-190
55
40
2900
9.2
11
65.0
3.0
13
WRY100-65-190
60
38
2900
9.1
11
67.9
3.1
14
WRY80-50-200
50
50
2900
10.8
15
63
3.3
15
WRY100-65-200
80
40
2900
12.4
15
70.7
3.9
16
WRY100-65-220
60
50
2900
12.6
15
65.6
3.0
17
WRY100-65-210
90
45
2900
15.7
18.5
70
3.6
18
WRY100-65-230
100
55
2900
19.5
22
70.7
3.9
19
WRY125-100-170
155
30
2900
17.3
22
75.1
5.5
20
WRY100-65-250
100
70
2900
27.8
30
68.6
4.1
21
WRY100-65-270
100
80
2900
32.4
37
67.2
3.6
22
WRY125-100-220
160
45
2900
25.5
37
75
3.6
23
WRY125-80-240
160
60
2900
35.1
45
74.5
5.5
24
WRY125-100-240
200
60
2900
42.9
55
72.2
6.7
25
WRY125-100-250
250
75
2900
66.5
75
76.8
7.5
26
WRY150-125-260
300
80
2900
83.9
90
77.9
8.3
27
WRY150-125-270A
360
80
2900
96.7
110
81
8.5
28
WRY150-125-270
400
80
2900
110
132
79
9.8
29
WRY200-150-500
500
80
1480
136
160
76
9.5
30
WRY250-200-500
600
80
1480
163
200
80
11
Â
1. Summarize
WRY series hot oil pumps are designed on base of advanced oil pumps home and abroad. They have reasonable and compact structure, small size, high efficiency and no oil leakage.
2. Characteristic
Single grade, single suction, cantilever type and foot support are the main sturcture features. The inlet is horizontal and the outlet is vertical. It is installed together with a motor on the base.
2.1 The pump adopts PTEE as the seal. It has good heat adaptablity, seal relibility and no leakage.
2.2 The structure is compact and simple. It requires low maintenance cost and no need cooling
equipment.
2.3 Excellent working performance, high efficiency, low energy consumption, low noise, long workin time.
Parameters & Specification
Â
Item.
Model
Quantity ( m3/h)
Head (m)
Round (r/min)
Power (kw)
Efficiency ( %)
NPSH (m)
Shaft Power
Motor power
1
WRY25-20-120
2
20
2840
0.36
0.55
30
1.2
2
WRY25-20-125
3
20
2840
0.55
0.75
30
1.4
3
WRY50-32-150A
5
25
2840
1.0
1.5
34
1.6
4
WRY50-32-150
8
22
2840
1.1
1.5
43.5
1.8
5
WRY50-32-160
10
25
2840
1.5
2.2
45.2
2.0
6
WRY50-32-170
12.5
32
2900
2.4
3.0
45.7
2.4
7
WRY65-50-170
29
32
2900
3.4
4.0
64.0
2.6
8
WRY65-50-170A
40
25
2900
4.5
5.5
60
2.7
9
WRY65-50-180
20
38
2900
4.0
5.5
52
2.7
10
WRY80-50-170
60
25
2900
6.7
7.5
61
2.9
11
WRY80-50-180
40
40
2900
7.0
7.5
62.1
2.9
12
WRY80-50-190
55
40
2900
9.2
11
65.0
3.0
13
WRY100-65-190
60
38
2900
9.1
11
67.9
3.1
14
WRY80-50-200
50
50
2900
10.8
15
63
3.3
15
WRY100-65-200
80
40
2900
12.4
15
70.7
3.9
16
WRY100-65-220
60
50
2900
12.6
15
65.6
3.0
17
WRY100-65-210
90
45
2900
15.7
18.5
70
3.6
18
WRY100-65-230
100
55
2900
19.5
22
70.7
3.9
19
WRY125-100-170
155
30
2900
17.3
22
75.1
5.5
20
WRY100-65-250
100
70
2900
27.8
30
68.6
4.1
21
WRY100-65-270
100
80
2900
32.4
37
67.2
3.6
22
WRY125-100-220
160
45
2900
25.5
37
75
3.6
23
WRY125-80-240
160
60
2900
35.1
45
74.5
5.5
24
WRY125-100-240
200
60
2900
42.9
55
72.2
6.7
25
WRY125-100-250
250
75
2900
66.5
75
76.8
7.5
26
WRY150-125-260
300
80
2900
83.9
90
77.9
8.3
27
WRY150-125-270A
360
80
2900
96.7
110
81
8.5
28
WRY150-125-270
400
80
2900
110
132
79
9.8
29
WRY200-150-500
500
80
1480
136
160
76
9.5
30
WRY250-200-500
600
80
1480
163
200
80
11
Â
1. Sufficient anti-fracture strength;
2. Good abrasion resistance;
3. The smooth surface finish;
4. Excellent corrosion resistance, thermal fatigue, thermal cracking performance.
Tungsten carbide roller rings can working in bad conditions , small profile rolling (especially rebar rolling) process conditions is harsher than the high-speed wire rod, and therefore corresponds to the profile rolling ,tungsten carbide rollers recommend using high binder phase carbide.
Pre-finishing all vehicles roller should ensure its high toughness, strength, rigidity and thermal conductivity, followed before considering its wear resistance. When designing each vehicles roller, pre-finishing materials should choose carbide grades of Co, Co- Ni- Cr binder content is high (greater than or equal to 25wt%) , requiring an average WC grain size of coarse (5μm ~ 6μm), to obtain a higher shock toughness, proper strength and hardness. For the finishing of the roller movements, particularly the last two rollers of the finish rolling, which suffered load is small, and high relative velocity of the material to be pressed (80 m / min ~ 120 m / min). In this case, the wear resistance of the roller to be the most important requirements, and must ensure the strength , timpact toughness and hardness of a reasonable match, so the binder of Co / Ni content ratio and the average grain WC control of particle size and other factors must have greater control in front of different pre-finishing rolling roll.
According to the structure of tungsten carbide rollers, it can be divided into solid tungsten carbide roller and composite tungsten carbide roller. Solid tungsten carbide rollers have been widely used in pre-finishing and finishing stands high speed wire rod mill (including fixed reducing the rack, pinch roller rack). Composite tungsten carbide roller is made of cemented carbide and other materials, and it can be divided into tungsten carbide composite roll rings and solid tungsten carbide composite roller. Tungsten carbide composite roll rings mounted on the roller shaft; solid tungsten carbide composite roller will be directly cast in the roll axis to form a whole, a large load is applied to the rolling mill.
Tungsten carbide rollers produced by powder metallurgy method, the key to its process control is the chemical composition of the material and the mixture was prepared, pressed molding, sintering and deep processing and other preparation process parameters.
1. Preparation of starting material (WC focus quality): As the WC raw material and quality control of the use of different levels of quality may fluctuate, resulting in adverse effects on microstructure.
2. Preparation of the mixture: Mixture preparation is the key to the production process of the roller, the roller of failure modes - trachoma, mainly generated by this procedure.
3. Pressing: roller pressing is an important process of the roller mill.
4. Sintering: roller sintering is to determine the final quality of the roller production processes, use of advanced low-pressure sintering technology, HIP sintering technology can greatly improve the performance of roller.
5. Deep processing: deep processing rollers have a greater impact on the quality and accuracy of the roller surface.
Model NO.: WRY series
Position of Pump Shaft: Horizontal Pump
Pump Casing Combined: Horizontal Split Pumps
Mounting Height: Suction Centrifugal
Impeller: Semi-Open
Usage: Circulating Pump
Seal: Mechanical Seal
Model: Could Be Customized
Trademark: Wulin
Transport Package: Wooden Case
Specification: 0.55-220 kw
Origin: Changzhou, China
HS Code: 8413110000
Model NO.: WRY series
Position of Pump Shaft: Horizontal Pump
Pump Casing Combined: Horizontal Split Pumps
Mounting Height: Suction Centrifugal
Impeller: Semi-Open
Usage: Circulating Pump
Seal: Mechanical Seal
Model: Could Be Customized
Trademark: Wulin
Transport Package: Wooden Case
Specification: 0.55-220 kw
Origin: Changzhou, China
HS Code: 8413110000
1. Summarize