Precision Casting Excavator Parts
Tengzhou Tiangong Machinery Co., Ltd. Tengzhou Tiangong Machinery Co., Ltd. was established in 2004 and is located in the Nilou Industrial Park, Guanqiao Town, Tengzhou City, Shandong Province. We currently employ over 100 senior skilled technicians and operate from a factory covering more than...
- Product Introduction
Tengzhou Tiangong Machinery Co., Ltd. was established in 2004 and is located in the Nilou Industrial Park, Guanqiao Town, Tengzhou City, Shandong Province. We currently employ over 100 senior skilled technicians and operate from a factory covering more than 14,000 square meters, possessing strong mass production capabilities.
Each production team is led by a dedicated technical supervisor who ensures strict quality control at every step of the manufacturing process. Furthermore, we utilize various professional equipment to conduct comprehensive qualification tests on finished products, including hardness tests, composition analysis, and mechanical performance testing.
One-Stop Service
We specialize in multiple precision casting processes, including Water-Glass Precision Casting, Silica Sol Precision Casting, and Coated Sand Precision Casting, to meet diverse production needs at various price points. We are capable of producing a wide range of products and are equipped with professional technical staff to assist customers with product design and provide full follow-up throughout the production process.
7*24 Customer Service
Within eight hours of receiving your inquiry and product requirements, we will assign a dedicated customer service representative to contact you. They will communicate with you in detail to understand your needs, minimizing your waiting time during the quotation phase and enabling a faster transition to production.
Ours Precision Casting Excavator Parts
We utilize investment casting
Professional wax pattern design ensures a smooth, burr-free surface on the finished product.
Premium metal materials
We select high-quality pure virgin metals and strictly reject the use of recycled or secondary metals to guarantee product quality.
Wax Tree Assembly
Workers carefully weld individual wax patterns, layer by layer, onto a central trunk (the gating system) using heated soldering knives - much like hanging fruits on a tree.
Shell Building
The assembled wax tree is immersed in a special refractory slurry to ensure every wax pattern surface is evenly coated. While the slurry on the wax tree surface is still wet, it is immediately subjected to sanding-typically in a fluidized sand bed-to allow the sand grains to adhere uniformly. The wax tree, now coated with slurry and sand, is transferred to a constant temperature and humidity drying area for natural air drying or chemical hardening.
Dewaxing
At this stage, the shell-building process is complete, and the ceramic shell has fully hardened. The entire "shell cluster" must undergo a final inspection before dewaxing. The shell cluster is immersed in a tank of near-boiling water to melt and drain out the wax. This method is sometimes used for products with specific structures.
Shell Firing
The hollow shells, after dewaxing, are carefully loaded into a high-temperature firing furnace. Proper spacing must be maintained between the shells to ensure uniform heating and airflow. Upon completion of the firing process, the shells become high-strength, clean, and preheated perfect molds ready for use.
Product Forming
After pouring is completed, the shell with the castings inside needs to cool down in a natural environment or under controlled conditions. After the metal has completely solidified, the castings need to be removed from the hard shell. The surfaces of the cut-off castings usually retain oxide scale and a small amount of shell material. Using a shot blasting machine, the casting surfaces are impacted with high-speed steel shot to expose the base metal color and achieve a uniform cleaning effect.
Most castings (especially steel castings) must undergo heat treatment to eliminate internal stresses generated during the casting process, refine the grain structure, and adjust mechanical properties (such as hardness, strength, toughness) to meet the technical standards required by customers. Common heat treatments include annealing, normalizing, quenching, and tempering.
Actual Product Photos
Frequently Asked Questions
What materials can you use to produce parts?
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We primarily manufacture various high-end alloy steel components, such as:
- High-Manganese Steel Series: ZGMn13 (used for wear-resistant and impact-resistant parts, such as adapter seats and bucket tips).
- Carbon Steel and Low-Alloy Steel Series: ZG270-500, 40Cr, 42CrMo (used for structural components, such as pins, connecting rods, and supports).
- Stainless Steel Series: 400 Series (e.g., 420 for wear and corrosion resistance), 300 Series (e.g., 304/316 for special working conditions).
We guarantee that all raw materials are made of premium virgin metals, and we strictly reject the use of recycled or secondary metals to ensure the mechanical properties and durability of our products.
What casting processes do you use, and what are the differences?
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We offer three mainstream precision casting processes to meet different needs and budgets:
- Water-Glass Process: Cost-effective with a short production cycle, suitable for medium to large castings where surface finish and dimensional accuracy are not extremely critical.
- Silica Sol Process: Provides higher surface finish and superior dimensional accuracy, capable of producing more complex and thin-walled parts. This is the most widely used high-quality process today.
- Coated Sand Process: Mainly used for producing larger steel castings with better surface quality than conventional sand casting, serving as a complement to the water-glass process.
Our technical team can recommend the most suitable process based on your part drawings, budget, and performance requirements.
What surface treatment options are available?
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We offer a variety of post-processing options based on your needs:
- As-Cleaned Condition: The castings in their原始 state after shot blasting.
- Anti-Rust Paint Coating: Facilitates transportation and storage, preventing rust.
- Precision Machining: We provide one-stop services such as heat treatment (quenching, tempering, etc.) and machining (turning, milling, drilling, grinding), delivering ready-to-assemble finished products directly to you.
What are the production and delivery lead times?
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Production lead times depend on the process, order quantity, and product complexity:
- Conventional Water-Glass Process: Approximately 15-25 days.
- Silica Sol Process: Approximately 25-35 days.
For urgent orders, we can optimize production scheduling to shorten the lead time as much as possible. After you place an order, we will provide you with a clear delivery timeline.
What are the prices, and how can I request a quote?
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To provide you with the most accurate quotation, we need the following information:
- Product drawings or samples.
- Material requirements.
- Process requirements (if none, we will recommend one).
- Order quantity.
- Surface treatment requirements.
Our Commitment: Within 8 hours of receiving your inquiry and product information, our dedicated customer service or sales representative will contact you to discuss details and provide a competitive quotation as quickly as possible.
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