Engineer Plastic
1.
Single Rope Mining Hoist Plastic Plates DSCB-01
Technical Characteristics:
1). Of high mechanical strength, and long usage cycle
The compressive strength of this kind of plastics plates is 7 to 10 times higher than that of the wood liner, thus conditions such as crushing and flatting of the wire rope groove, and its usage cycle is above 5 times longer than that of the wood liner.
2). Of wide range of application
The plastic plates are of good resistance of desiccation and moisture, avoiding the phenomenon of the sun cracking and rotting of the wood. They are especially suitable for using in severe environment, such as Mining of large water spray and high corrosivity, and underground mining.
3). Of light proportion and no water absorption
The proportion is 0.98, which is lighter than the wood liner after absorption, thus the rotational inertia and the reactive power of the equipment would not be increased.
4). Compression moulding, with flat surface of the rope groove
They are easy to install. With the neatly rank of the wire rope, phenomenon such as locking and skipping of the wire rope could be avoid from happening, and the usage life of the wire rope could be extended.
Mechanical Property:
|
ITEMS
|
DATA
|
REMARKS
|
|
Ware Rate (10-7cm3/Kgm)
|
1.0
|
3 times higher than that of the timber
|
|
Degree of Corrosion (g/m2)
|
≥±2
|
7times higher than that of the timber
|
|
Hardness (Shore D)
|
70~84
|
|
|
Martin Heat Resistance (℃)
|
0~65
|
|
|
Density (g/cm3)
|
0.97~0.99
|
Generally density of the wood is 0.85
|
|
Impact Strength (kg.cm/cm2)
|
7.1~9.5
|
|
|
Compressive Strength (Mpa)
|
68.5
|
Wood horizontal grain bearing stress is 0.85
|
|
Bending Strength (Mpa)
|
61.5
|
Bending strength of wood is 6
|
|
Water Absorption (%)
|
0.01
|
|
2. Multi-Rope Mining Hoist friction Plastic liners
GDM326 High Performance Friction Liner with Imported Material
To fulfill the new requirement of large and super - large multi - rope friction hoist , our company using the Germany imported raw materials produces GDM326 high performance friction liner with imported material, mainly matching the imported hoist, domestic large and super large hoist and meeting other needs.
Compared with other liner, GDM326 high performance friction liner with imported material has been greatly improved in the friction coefficient, compression resistance, abrasion resistance, stability etc., so it has been adopted and trusted by a great number of users and brought good economic benefit. GDM326 high performance friction liner with imported material can also be used for other machinery conveying power by friction and be used as leading wheel friction liner of funicular.
Technical Characteristics
1). All the friction coefficients of GDM326 in various conditions are more than 0.28, which completely fulfills the requirements of multi - rope friction hoist.
Friction coefficients of GDM326 are listed in below table:
|
Test Condition
Test Pressure
|
8
Kg/cm2
|
12
Kg/cm2
|
16
Kg/cm2
|
20
Kg/cm2
|
25
Kg/cm2
|
30
Kg/cm2
|
|
Dry
|
0.55
|
0.55
|
0.51
|
0.51
|
0.49
|
0.49
|
|
Wet
|
0.60
|
0.60
|
0.60
|
0.61
|
0.62
|
0.62
|
|
Lubricated with Home-made Friction Fat iris-400
|
0.36
|
0.36
|
0.35
|
0.35
|
0.35
|
0.33
|
|
Lubricated with Turex604
|
0.36
|
0.34
|
0.34
|
0.33
|
0.30
|
0.30
|
2). High mechanical properties, containing no material damaging steel wire rope, being easy to machine groove in worksite.
Mechanical properties of GDM326 are listed in below table:
|
Density
g/cm3
|
Hardness
HD
|
Impact Strength
KJ/M2
|
Tensile Strength
Mpa
|
Bending Strength
Mpa
|
Bending modulus
Mpa
|
Breaking Elongation
%
|
Compression Strength
Mpa
|
|
1.40
|
58~65
|
15
|
17
|
13
|
920
|
61.3
|
33
|
3). Test Results of GDM326 as following:
Test Report of Friction Liner
|
Sample Name
|
GDM—326
|
Test Item
|
Friction Coefficient
|
Standard
|
JB/T 10347-2002
|
|
Sample Number
|
|
Steel Wire Rope Speed
|
1mm/s
|
Device Name
|
SC-IV Friction Liner Tester
|
|
Sample Material
|
|
Test Date
|
Apr. 15th, 2008
|
Applicant Name
|
|
|
Sample Size
|
|
Ambient Temperature
|
25℃
|
Test Unit Name
|
|
Test Report of Friction Liner
|
Sample Name
|
GDM—326
|
Test Item
|
Friction Coefficient
|
Standard
|
JB/T 10347-2002
|
|
Sample Number
|
|
Steel Wire Rope Speed
|
1mm/s
|
Device Name
|
SC-IV Friction Liner Tester
|
|
Sample Material
|
|
Test Date
|
Apr. 15th, 2008
|
Applicant Name
|
|
|
Sample Size
|
|
Ambient Temperature
|
25℃
|
Test Unit Name
|
|
Test Report of Friction Liner
|
Sample Name
|
GDM—326
|
Test Item
|
Friction Coefficient
|
Standard
|
JB/T 10347-2002
|
|
Sample Number
|
|
Steel Wire Rope Speed
|
1mm/s
|
Device Name
|
SC-IV Friction Liner Tester
|
|
Sample Material
|
|
Test Date
|
Apr. 15th, 2008
|
Applicant Name
|
|
|
Sample Size
|
|
Ambient Temperature
|
25℃
|
Test Unit Name
|
|
GM-3 High Performance Friction Liner · Multi-rope mining Hoist
Friction Liner is one of the main components of mullti - rope friction hoist, which is PVC and CPUR previously. Friction coefficient of PVC is low (0.28). CPUR has better abrasion resistance than PVC, however, its friction coefficient is 0.20~0.23 and difficult to be machined, has unstable quality due to process reason and found melted in service course, so CPUR is only used with friction coefficient of 0.20~0.23. All the friction Liner with more than 0.25 friction coefficient used in home - made multi - rope hoist needs to be imported overseas, which is very expensive and the import duration time is very long.
GM - 3 high performance friction liner researched and developed from 1997 has met above requirement and passed the provincial technical appraisal on Sep. 12th, 2001.
Technical Characteristics:
1). All the friction coefficients of GM - 3 in various conditions are more than 0.25, even more than 0.28 tested by China Mining University and Luoyang Mining Machinery Engineering Design and Research Institute, which completely fulfills the requirements of multi - rope friction hoist.
2). High mechanical strength, thermal resistance and melting resistance better than imported liner, no material damaging steel wire rope, being easy to machine groove in worksite.
3). Be better matched with friction fat whether which is home-made or imported . Ailisi 400 is the beat friction fat.
4). Price is more competitive than imported liner, and bring Customer better economic benefit.
5). Test results show its thermal resistance, melting resistance and abrasion resistance are better than imported liner, and the abrasion per power is equivalent to imported liner.
Mechanical Properties
|
No.
|
Item
|
Unit
|
Results
|
Remarks
|
|
1
|
Density
|
g/cm3
|
1.36
|
|
|
2
|
Hardness
|
HD
|
70-74
|
GB/T2411
|
|
3
|
Impact Strength
|
KJ/M2
|
9.72
|
GB1843
|
|
4
|
Tensile Strength
|
Mpa
|
19.10
|
GB1040
|
|
5
|
Bending Strength
|
Mpa
|
26.22
|
GB9341
|
|
6
|
Bending Modulus
|
Mpa
|
920
|
GB9341
|
|
7
|
Breaking Elongation
|
%
|
10.6
|
GB1040
|
|
8
|
Compression Strength
|
Mpa
|
45.6
|
GB1040
|
|
9
|
Thermal Decomposition Temperature
|
℃
|
320
|
|
Difference of abrasion Per Power Tested of GM-3 and K25
|
Sample No.
|
Weight Before Test
(g)
|
Weight After
Test
(g)
|
abrasion
(g)
|
Total abrasion
(g)
|
Volume
(cm3)
|
abrasion Per Power
(10-6cm3/KN·m)
|
|
K25
|
1″
|
549.70
|
549.23
|
0.47
|
0.75
|
0.481
|
5.29
|
|
2″
|
548.12
|
547.84
|
0.28
|
|
GM-3
|
1″
|
513.44
|
513.15
|
0.29
|
0.56
|
0.412
|
5.29
|
|
2″
|
523.22
|
522.95
|
0.27
|
3. KP-09 Ultrahigh Molecular Head Sheave Liner
KP - 09 ultrahigh molecular head sheeve liner has excellent abrasion resistance (slurry abrasion is one - tenth of PVC, 1/7 of carbon steel, 1/27 of copper ), good impact resistance(up to 180KJ/m at least), good self - lubrication (friction coefficient is only about 0.10), ultrahigh tensile strength (more than 35Mpa), good corrosion resistance and water resistance, good stability in many inorganic and organic solvents, excellent low temperature resistance, and non toxic. KP - 09 can be produced to be many shapes and specifications according to Customers’ requirements, and still keep excellent performance of ultrahigh molecular material.
Properties Parameters of KP-09 Ultrahigh Molecular Head Sheeve Liner
|
Item
|
Value
|
Unit
|
Test Standard
|
|
Density
|
0.95-1.08
|
g/cm3
|
GB1033
|
|
Tensile Strength
|
36
|
Mpa
|
GB1040
|
|
Breaking Elongation
|
300
|
%
|
GB1040
|
|
Impact Strength
|
196
|
KJ/m2
|
GB1043
|
|
Ball Indentation Hardness
|
38
|
N/mm2
|
GB3398
|
|
Friction Coefficient
|
|
|
|
|
Self-lubrication
|
0.10-0.22
|
|
|
|
Wet
|
0.05-0.10
|
|
|
|
Coated with Oil
|
0.05-0.08
|
|
|
|
Abrasion
|
1.3
|
mg
|
GB3960
|
|
Expansion Coefficient
|
<2×10-4
|
K-1
|
|
|
Thermal Deforming Temperature at 0.45Mpa
|
93
|
℃
|
GB1634
|
|
Melting Point
|
136
|
℃
|
D2117
|
|
Vicat Softening Point
|
134
|
℃
|
D1525
|
|
Brittle Temperature
|
Lower than -70
|
℃
|
|
Hoist Modified PP Head Sheave and Guide Pulley Liner
|
PROPERTY
|
DATA
|
|
Proportion g/cm3
|
0.98
|
|
Bending Strength (Mpa)
|
61.5
|
|
Compressive Strength (Mpa)
|
68.5
|
|
Hardness (Shore D)
|
80
|
|
Water Absorption (%)
|
0.1
|
4. WSM-3 New Environmental Asbestos Free Brake Shoe ·Hoist Brake
Braking, which is a process of thermal energy turning into kinetic energy, is realized by the friction of the friction couples. So the friction - static material of the friction couples is the guarantee of the safety of the brake. Brake Shoe is the main parts of the hoist brake, if the property of the brake shoe, such as the friction coefficient, could not be qualified for the designing requirement, accidents which influence the machinery and human safety may be caused properly.
The brake shoes used in our country are mainly made of asbestos material. But there are some insurmountable shortcomings of the asbestos brake shoe:
The thermal conductivity of the asbestos is not very good, the friction heat could not disappear quickly, thus it causes the thickening of the hot recession layer and the aggravating of the abrasion, and polluting the environment as well. Especially, the asbestos fiber dust is one of the causes that lead to human cancer；
Abrasive of high hardness and Steel Wool are used to increase the friction coefficient and heat dissipating capability；
The intensity of asbestos will reduce after complete dehydration decomposition at 650℃ to 700℃；
Hot recession of the friction property of the asbestos happens frequently.
Environmental Asbestos Free Brake Shoe is a kind of the friction - static material, which uses resin and fiber reinforced plastics instead of asbestos. Its characteristics are:
Of high friction coefficient, good mechanical intensity, and small heat recession;
Steel wool and high - hardness abrasive free, with low hardness, it causes small damage to the brake discs;
Asbestos free, environmental friendly;
Of low abrasion, and long usage cycle.
With the strengthening of people’s environmental awareness and self - protection awareness, Environmental Asbestos Free Brake Shoe, having a widely usage prospect, will finally take place of the Asbestos Brake Shoe.
|
ITEMS
|
TESTING RESULTS
|
|
Compression Strength Mpa
|
48.8
|
|
Tensile Strength Mpa
|
12.64
|
|
Shearing Strength Mpa
|
26.65
|
|
Charpy Impact Strength KJ/m2
|
6.9
|
|
Hardness HD
|
80±5
|
|
Density
|
1.97
|
|
Friction Coefficient 100℃-200℃
|
0.519
|
