Pantograph System-Carbon Strip

The electric locomotive obtains electric energy from the road network wire through the pantograph slide, and drives the traction motor to drive the train. Compared with traditional powder metallurgy strips, the carbon strips for pantographs have the advantages of longer service life and reduced interference with telecommunication. Therefore, carbon strips will greatly promote the development of railway electrification and has broad application prospects.

The pantograph and the collector shoe are one of Kimwan’s main products. The pantograph is the electrical equipment that draws electrical energy from the catenary. It is installed on the top of a locomotive or a moving car. It is the core component of the electric locomotive to provide power. The collector shoe is to provide power to the locomotive through the third track. The core part of the collector shoe is a carbon slider, the quality of the slider affects the life of the shoes and the third track. After years of unremitting efforts, our company has made significant achievements in the self-developed metal-impregnated carbon strips and collector shoes, from raw materials configuration, extrusion molding, baking to machining. In the railway industry, Kimwan is dedicated to provide customers with cost-effective, personalized products and solutions.

Pantograph System-Carbon Strip

Metal-Impregnated Carbon Strip

Pantograph System

Features:

Good bonding performance and low bonding resistance of carbon strip and aluminum bracket,With ultra-high conductivity, thermal conductivity and arc resistance Long service life and stable fatigue resistance Automatically lower pantograph and high safety facto.

地铁碳滑板理化指标 Indicators for Metro Carbon Slide

Item	Technical Requirement		Unit	Test Result
Bonding Resistance	≤1		mΩ	0.3±0.1
Shear Strength	-40℃	≥5.0	Mpa	6±0.2
	10-35℃ Under Room Temperature			5.5±0.5
	150℃			12±2
Indicators of Carbon Strip	Bulk Density	≤4.0	g/cm3	2.2-2.6
	Flexural Strength	≥70	Mpa	75-80
	Compressive Strength	≥100	Mpa	110-120
	Impact Toughness	≥0.15	J/cm2	0.25-0.3
	20℃Electrical Resistivity	≤10	μΩ.m	4-7
	Shore Hardness	≥70	HS	85-95
Wear Performance	Height Wear Ratio	≤15	mm/ Ten thousand kilometers	0.9
	Weight Wear Ratio	≤350	g/ Ten thousand kilometers	55
	Contact Wire Wear Ratio	≤0.015	Mm²/ Contacting times per ten thousand kilometers	0.013
Note: Wear test is done under the speed of 120Km / h, current 400A and pressure 70 ± 10N. We can provide customized solutions for you.

Pure Carbon Strip

Features

High strength, good mechanical properties, long service life, and stable anti-fatigue properties Low resistivity, with ultra-high conductivity, thermal conductivity and arc resistance,Good anti-friction performance and self-lubricating properties.

纯碳碳条理化指标 Indicators for Pure Carbon Strip

Regular Test Item	Item	Unit	Technical Requirement	Test Result
	Bulk Density	g/cm3	≤1.8	1.7-1.75
	Compressive Strength	Mpa	≥30	35-40
	Flexural Strength	Mpa	≥60	65-70
	Impact Toughness	J/cm2	≥0.1	0.15-0.18
	20℃Electrical Resistivity	μΩ.m	≤40	20-25
	Rockwell Hardness	HRC	45-100	50-55
	Shore Hardness	HS	60-100	65-75
Note: We can provide customized solutions for you.

Pantograph

Features:

Simple structure, long service life, can be used for at least 30 years,choose carbon steel and stainless steel, strong fatigue resistance after welding, especially adapted to rigid Catenary.plate spring provide flexibility stability and reliability of head. Have ADD, lower position display, highly drop and other functions.

Pantograph Nominal Technical Indicators

Item	Typical Description
	DC 1.5KV	AC 25KV
Typical Running Current	2000A	960A
Typical Running Current	540A	240A
Minimum Electric Clearance	54mm
Maximum Running Speed	160km/h
Nominal Static Contact Force	120N	75N
Minimum Working Height	404mm
Folded Height	254mm
Carbon Strip Material	3.3bar
Minimum Action Pressure	3.6 bars
Minimum Working Pressure	10 bars
Maximum Pressure	6 bars
Raising and Dropping Time	＜5s
Insulator Height	80mm		400mm
Note: We can provide customized solutions for you.

Metal-Impregnated Carbon Collector Shoe

Metal-Impregnated

Carbon Collector Shoe

Features：

Good mechanical properties, long service life, with a stable fatigue resistance,Low resistivity, good electrical conductivity,Moderate hardness can effectively protect the life of the third track.

Physical and chemical indicators of Metal-Impregnated Carbon Collector Shoe

Regular test	Item	Unit	Requirement	Test Result
	Bulk density	g/cm3	≤4.0	2.2-2.6
	Compressive Strength	Mpa	≥60	60-65
	Flexural Strength	Mpa	≥100	140-150
	Impact Toughness	J/cm2	≥0.15	0.25-0.3
	20℃Electrical esistivity	μΩ.m	≤12	4-8
	Rockwell Hardness	HRC	≤120	80-90

Metal-Graphite Composite Collector Shoe

Features:

Select the appropriate hardness of the metal material to increase its service life, while greatly improving the electrical conductivity. Embedding in the graphite column will greatly improve the lubrication performance, which not only effectively protect the third track, but also improve the use of electric shoe performance.

Physical and chemical indicators of Metal-Graphite Composite Collector Shoe

Regular Test	Item	Unit	Requirement	Test Result
	Bulk Density	g/cm3	≤4.0	2.7-2.9
	Compressive Strength	Mpa	≥60	80-100
	Flexural Strength	Mpa	≥100	120-130
	Impact Toughness	J/cm2	≥0.15	0.3-0.35
	20℃Electrical Resistivity	μΩ.m	≤12	1-3
	Rockwell Hardness	HRC	≤120	50-70