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Add: No.668, Chengqiao Road, Chengqiao Community, Weitang Subdistrict, Jiashan County, Zhejiang, China

Tel: +86-573-84027080

+86-573-84028080

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Home > Wear Plate Performance Test

Wear Plate Performance Test

Purpose 
A test is carried out to confirm the difference of performance of three different wear plates when their sliding surfaces are mixed with other substances in practical use.

Test Conditions

Test Pieces1. Cast-iron embedded type solid-lubricating wear plate
2. Copper-based, graphite-embedded and self-lubricating wear plate(#50SP)
3. Dispersing type self-lubricating wear plate with steel backing and porous solid lubricant (#200)
Opposing MaterialFC250 (Sliding-surface grinding)
Load (Surface Pressure)5.88 N/mm2 (60 kgf/cm2)
Velocity166.7 mm/sec (7 m/min)
Stroke80mm
Movement ModeSerial movement
Cycle100,000 times
Test Stop Condition (Coefficient of Friction)μ>0.3
LubricantLithium-based lubricating grease coating at initial stage
Mixed SubstanceFC250 ground iron powder 0.2g

Plane-Surface Reciprocating Motion Tester 
 

A test is conducted, when all sliding surfaces of the test pieces are dispersed and the opposing material is clamped.

Conclusion 
1. A scratch appears when the cast-iron embedded type solid-lubricating wear plate is used for the eleventh time.

2. When the copper-based, graphite-embedded and self-lubricating wear plate (#50SP) is used for the 36,566th time, a test ceases resulting from the increased coefficient of friction (μ>0.3). Owing to the addition of mixed substance, many linear friction marks appear on the sliding surfaces. Part of solid lubricants fall off.

3. The dispersing type self-lubricating wear plate with steel backing and porous solid lubricant (#200) has a relatively high coefficient of friction at the initial stage of a test. Then, it maintains a stable indicator after 100,000 cycles, and the accumulated sliding distance reaches 16km. As a result, the abrasion loss of the test piece is only 0.004mm, while simultaneously the abrasion loss of the opposing material is 0.002mm.

4. The phenomenon of scratches and abnormal abrasion may easily occur when the cast-iron embedded type or copper-based type self-lubricating wear plates are mixed with impurities. The dispersing type self-lubricating wear plate allows impurity to be buried into a sintered layer, so the phenomenon of scratches or abnormal abrasion does not occur. At the same time, it has almost no negative impact on the opposing material.

5. Thus it can be seen that the dispersing type self-lubricating wear plate is superior to the other two types.

Test Results

1. Change in the Coefficient of Friction
 

(1) Cast-Iron Embedded Type Solid-Lubricating Wear Plate ; (2) Copper-Based, Graphite-Embedded and Self-Lubricating Wear Plate ; (3) Steel Backing and Porous Solid Lubricant Dispersion

2. Abrasion Loss

Sliding MaterialLifespanTest PieceAbrasion Loss, mmAbrasion Loss of the Opposing Material, mmTotal Abrasion Loss Ratiomm/(N/mm2・ mm/sec ・hr)
Cast-iron embedded type solid-lubricating wear plateA scratch occurs when the plate is used for the 11th time.- -
Copper-based, graphite-embedded and self-lubricating wear plate (#50SP)36,5660.0410.0365.64 × 10-6
Dispersing type self-lubricating wear plate with steel backing and porous solid lubricant(#200)100,0000.0040.0021.43 × 10-7
Dispersing type self-lubricating wear plate with steel backing and porous solid lubricant(#200) for reference100,0000.0030.0021.34 × 10-7

The reference item is listed to provide test results when no impurity is mixed.

3. Sliding-Surface Observation Image

  • Occurrence of Scratches

  • Occurrence of Scratches

Cast-Iron Embedded Type Solid-Lubricating Wear Plate Test Piece / Opposing Material (A test ceases due to the occurrence of scratches after 11 cycles.)

  • Part of solid lubricants fall off resulting from the 
     scratching of impurity.

  • Occurrence of Some Scratch Marks

Copper-Based, Graphite-Embedded and Self-Lubricating Wear Plate (#50SP) Test Piece / Opposing Material (A test ceases resulting from the μ increase after 36,566 cycles.)

  • Occurrence of Some Linear Scratch Marks

  • Occurrence of Some Linear Scratch Marks

Dispersing Type Self-Lubricating Wear Plate with Steel Backing and Porous Solid Lubricant (#200) Test Piece / Opposing Material (It passes a test after 100,000 cycles.)

Contact Us
Jiashan Dernore Bearing Co.,Ltd

Address: No.668, Chengqiao Road, Chengqiao Community, Weitang Subdistrict, Jiashan County, Zhejiang Province, China

Tel: +86-573-84028080

Fax: +86-573-84027519

E-mail: export01@chinaoiles.com

Jiashan Dernore Bearing Co.,Ltd
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