SD5-2 Iron Casting hydraulic Parts

Chinese laminated Sand Casting Manufacturer

We are a casting manufacturer specializing in high-quality coated sand casting solutions. With advanced technology and thirty years of professional knowledge, the company focuses on producing precision hydraulic components for industries such as engineering machinery, agricultural machinery, coal mining machinery, metallurgy and chemical engineering.

We have three affiliated casting workshops with an annual production capacity of approximately 3000 tons for various types of castings. We have over 100 sets of advanced casting parts, processing, and testing equipment.

It is also equipped with many advanced CNC machining centers, CNC turning centers, CNC milling machines, and CNC lathes. Heat treatment, electropolishing, mirror polishing, and CNC machining can be carried out according to customer requirements.

Certification

Testing Capabilities

Application

Coated sand casting components have been widely used in various industries due to their high precision, complex structural forming ability, and excellent surface quality.  

We provide hydraulic solutions such as gear pumps, multi way valves, solenoid valves, hydraulic motors, etc. for the engineering machinery, agricultural machinery, coal mining machinery, metallurgical and chemical industries.

The materials used include gray cast iron, ductile iron, and nodular cast iron.

All of these materials are designed to ensure lightweight structures, enhance wear resistance, and reliability under extreme environmental conditions.

Casting process flow chart

1. Mold Design

2. Sand Mold Making

3. Sand Core

4. Melting

5. Pouring

6. Polish

7. Cleaning

8. endoscopy

9. Raw Casting

The casting material ranges from HT250 to HT350, QT400-18 to QT700-2, RuT260 to RuT420, and all other kinds of alloy iron casting.

Coated sand casting components have been widely used in various industries due to their high precision, complex structural forming ability, and excellent surface quality. We provide hydraulic solutions such as gear pumps, multi way valves, solenoid valves, hydraulic motors, etc. for the engineering machinery, agricultural machinery, coal mining machinery, metallurgical and chemical industries.
The materials used include gray cast iron, ductile iron, and nodular cast iron
All of these materials are designed to ensure lightweight structures, enhance wear resistance, and reliability under extreme environmental conditions.

FAQ

Q1: What is the highest precision that Film coated sand shell casting can achieve?

A: Film coated sand shell casting can achieve ISO 8062 CT9 level precision (key dimensions ±0.3mm).

Q2: Do we accept small batch orders? How long does the delivery time usually take for

small batch orders?

A: Yes, of couse. We adopt a flexible production system to ensure a rapid response, utilizing 3D printing of film coated sand shell casting and validating the casting process.

Under normal circumstances, the delivery time for small batch orders will be influenced by the order size, complexity, and

production scheduling. Upon receiving the order, we initiate the production process promptly and maintain close communication with the customer to ensure the timely delivery of precision casting parts that meet the requirements.

Q3: How can we ensure the internal quality of the castings?

A: we employ a four-level inspection system to ensure the internal quality of the castings:

● Process monitoring: Use industrial endoscopes for 100% full inspection to ensure the quality of the internal cavity.

● Physical and chemical analysis: Using direct reading spectrometers and electron microscopes (inclusion detection accuracy up to 0.01mm level) for analysis.

● Mechanical verification: Sampling each batch of castings for fatigue testing (number of cycles > 10^7 times).

● Digital traceability: If special requirements are present, we will add a casting number to each batch of parts, achieving full traceability of the melting batch and process parameters.

Q4: Do we provide one-stop service for subsequent machining/surface treatment?

A: We provide a one-stop integrated service for the entire process chain:

● Machining support: Five-axis CNC + coordinate grinding machine (positioning accuracy up to ±0.03mm)

● Surface strengthening: Shot peening / phosphating/nitriding / PVD coating (hardness up to HRC65)

● Assembly and inspection: Equipped with air tightness testing and dynamic balance testing equipment.

Casting Cleaning & Inspection

The surface of each casting is smooth and clean, free from bumps, pores, and sand holes.Every product undergoes 100% inspection before packaging to ensure flawless quality.

1. Precision Endoscopic Testing: Advanced endoscopic instruments are used to detect internal defects and guarantee the reliability of the oil circuit.

2. Comprehensive Material Testing: Casting test bars are subjected to tensile, elongation, and metallographic (microstructure) analysis to ensure mechanical strength and material integrity.

Packaging & Shipping

Standard packaging uses wooden boxes or wooden pallets wrapped with plastic film.
Customized packaging can also be provided according to customer requirements.

Our professional engineering team is always ready to assist you with technical consultation and feedback.
We can also provide free samples to help you evaluate our products.

We make every effort to deliver the best products and services to our customers.
If you are interested in our company and products, please feel free to contact us by email or phone.
You are also welcome to visit our factory to learn more about our capabilities.

We sincerely welcome customers from all over the world to establish long-term business relationships with us,
and we believe we will share a successful and rewarding cooperation experience together.

APPLICATION AREAS

Xingtai Xiaolongwang Precision Hydraulic Pump Industry Co., Ltd.

Aerial Work Truck

Backhoe Loader

Dump Truck

Excavator

Forklift Truck

Harvesters

Sanitation Vehicles

Tractors