Products

High Quality Casting Parts for Mining Industry

Wear-resistant Buffers for Railway and Tramway Locomotives

As a critical component of the coupler buffer system, the buffers perform traction and pulling functions, adjust directional alignment, and enhance the safety and operational efficiency of mine car transportation. Compared to standard counterparts, our products extend 30% longer lifespan, reducing replacement fequency.

Order(MOQ):
1000kg
Goods Stock:
1000
Payment:
T/T, L/C, Paypal, Western Union
Market Price:
$1.8
Price:
$1.7/1000kg
Price Range:
5000 - 10000/$1.6
Price Range:
1000 - 5000/$1.65
Product Origin:
Anhui
Color:
Customized
Shipping Port:
Shanghai
Lead Time:
15-30days

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Product Details

Description：

The buffers Compresse elastic elements to absorb impact energy through friction and damping mechanisms to mitigate longitudinal impact forces, and reduce inter-vehicle collisions and damage to both vehicles and cargo. It can Minimize lateral coupler forces to improve mine car stability and ensure smooth operation and dissipate shocks and vibrations, significantly reducing structural stress on vehicles and cargo damage. The buffers minimize downtime and maintenance costs with robust wear protection.

Features and Advantages

Production capacity: The advanced vertical flaskless automatic shooting and squeeze molding line and lost foam casting production line meet the demands from customization to mass production.

Quality Assurance: The company's technology center is equipped with advanced testing instruments and equipment both at home and abroad and is a municipal enterprise technology center.

Innovation capability: Compared with industry counterparts, the wear-resistant liner plate exhibit superior abrasion resistance, extended service life, and dimensional stability.

Production Cpacity: We specializes in high-end alloy wear-resistant castings, boasting an annual production capacity of 20,000 tons.

Sustainable production: ISO 45001 Occupational Health & Safety certified operations with closed-loop material recycling systems, making production more efficient and green.

Extended service life: Compared with traditional wear-resistant castings, Zhongrun optimizes the alloy formula to achieve greater wear resistance.

Production Line Capabilities

1、Vertical Flaskless Molding Line: Enables high-speed, large-batch production with minimal dimensional variance.

2、Lost Foam Casting: Delivers complex geometries and smooth surfaces for precise fitment.

3、Medium-Frequency Induction Furnace: Ensures uniform melting of high-chromium alloys (Cr content 15-28%).

Product Parameters:

model number		tensile strength σb/Mpa	tensile strength 0.2/Mpa	elongation(%)	Fyi
new model number	equal old model number	minimum value	minimum value	minimum value	HBS Brinell hardness(BHS)	main metallographic structure
QT400-18	QT40-17	400	250	18	130-180	ferritle
QT400-15	-	400	250	15	130-180	ferritle
QT450-10	QT42-10	450	310	10	160-210	ferritle
QT500-7	QT50-5	500	320	7	170-230	ferritle+pearlite
QT600-3	QT60-2	600	370	3	190-270	pearlite+ferritle
QT700-2	QT70-2	700	420	2	225-305	pearlite
QT800-2	QT80-2	800	480	2	245-335	pearliteor tempered structure
QT900-2	-	900	600	2	280-360	bainite or tempered martensite

	Chemical composition(Mass fraction)(%)
	C	Si	Mn	Cr	Mo	Ni	Cu	S	P
KmTBN14Cr2-DT	2.4~3.0	≤0.8	≤2.0	1.5-3.0	≤1.0	3.3~5.0	-	≤0.10	≤0.15
KmTBN14Cr2-GT	3.0~3.6	≤0.8	≤2.0	1.5-3.0	≤1.0	3.3~5.0	-	≤0.15	≤0.15
KmTBCr9Ni5	2.5~3.6	≤2.0	≤2.0	7.0-11.0	≤1.0	4.5~7.0	-	≤0.15	≤0.15
KmTBCr2	2.1~3.6	≤12	≤2.0	1.5~3.0	≤1.0	≤1.0	≤1.2	≤0.10	≤0.15
KmTBCr8	2.1~3.2	1.5~2.2	≤2.0	7.0~11,0	≤1.5	≤1.0	≤1.2	≤0.06	≤0.10
KmlBCr12	2.0~3.3	≤1.5	≤2.0	11.0~14.0	≤3.0	≤2.5	≤1.2	≤0.06	≤0.10
KmTBCr15Mo	2.0~3.3	≤1.2	≤2.0	14.0~18.0	≤3.0	≤2.5	≤1.2	≤0.06	≤0.10
KmTBCr20Mo	2.0~3.3	≤1.2	≤2.0	18.0~23.0	≤3.0	≤2.5	≤1.2	≤0.06	≤0.10
KmTBCr26	2.0~3.3	≤1.2	≤2.0	23.0~30.0	≤3.0	≤2.5	≤2.0	≤0.06	≤0.1

model number	equal old model number	Chemical composition(Mass fraction)(%)					Residual element
model number	equal old model number	C≤	Si≤	Mn≤	S≤	P≤	Residual element
ZG200-400	2G15	0.20	0.50	0.80	0.04	0.04	Cr≤0.35,Ni≤0.30,Mo≤0.20,Cu≤0.30,v≤0.05;but Cr+Ni+Mo+Cu+v≤1.00
ZG230-450	ZG25	0.30	0.50	0.90	0.04	0.04	Cr≤0.35,Ni≤0.30,Mo≤0.20,Cu≤0.30,v≤0.05;but Cr+Ni+Mo+Cu+v≤1.00
ZG270-500	ZG35	0.40	0.50	0.90	0.04	0.04	Cr≤0.35,Ni≤0.30,Mo≤0.20,Cu≤0.30,v≤0.05;but Cr+Ni+Mo+Cu+v≤1.00
ZG310-570	2G45	0.50	0.60	0.90	0.04	0.04	Cr≤0.35,Ni≤0.30,Mo≤0.20,Cu≤0.30,v≤0.05;but Cr+Ni+Mo+Cu+v≤1.00
ZG340-640	ZG55	0.60	0.60	0.90	0.04	0.04	Cr≤0.35,Ni≤0.30,Mo≤0.20,Cu≤0.30,v≤0.05;but Cr+Ni+Mo+Cu+v≤1.00

Packaging & Shipment

FAQ

1.Q: Could you introduce your company’s business nature and production qualifications?
A: We are a professional manufacturer specializing in wear parts production with over two decades of industry expertise.

2.Q: How can we arrange a visit to your production facility?
A: We warmly welcome visits to our manufacturing base at any time. Our sales team will tailor a dedicated inspection itinerary for you.

3.Q: What core material systems do you utilize?
A: We employ engineered materials such as high-chromium cast iron, ductile cast iron, cast steel, and alloy steel. Material selection is scientifically optimized based on specific operational conditions and performance requirements.

4.Q: What payment methods do you support?
A: We accept international trade settlement methods including T/T and L/C. Flexible payment terms can be negotiated for long-term strategic partners.

5.Q: Do you offer customized branding services?
A: Yes, we provide end-to-end customization solutions covering industrial design, mold development, and product marking.

6.Q: How does your quality assurance system operate?
A: Our facility features professional-grade inspection equipment and a three-stage verification protocol: Incoming material inspection; Batch-specific process quality validation; Pre-shipment certification.