Industrial Heavy Duty Open Die Forging Products 42CrMo Open Die Forging Process

Heavy Duty 42CrMo Open Die Forgings for Industrial Gearbox Components. Our Heavy Duty 42CrMo Open Die Forgings are engineered for the demanding load and torque conditions of large industrial gearbox systems. Manufactured using open die forging techniques, these components offer excellent mechanical strength, dimensional stability, and fatigue resistance, making them ideal for use in high-power transmission environments.

Forged from premium 42CrMo alloy steel, the parts undergo precise heat treatment to ensure a strong and ductile core with high surface hardness when needed. The forging process enhances grain flow and eliminates internal defects, delivering superior structural integrity for continuous operation under harsh industrial conditions.

These forged components are well-suited for critical gearbox applications in sectors such as mining, metallurgy, cement, power generation, and heavy machinery.

Key Features

• High Strength & Toughness: Forged from 42CrMo alloy steel, offering excellent tensile strength and impact resistance under high-load conditions.

• Optimized Grain Structure: Open die forging process ensures refined grain flow and internal soundness for prolonged service life.

• Dimensional Stability: Precision heat treatment and controlled machining ensure consistent geometry and performance in rotating and static load environments.

• Customizable Profiles: Available in various forged shapes—discs, shafts—to meet gearbox layout and torque transmission needs.

• Wear & Fatigue Resistance: Suitable for surface hardening processes to resist wear and cyclic fatigue in long-term heavy-duty operation.

Application Fields

• Industrial Gearboxes: Core transmission components such as main shafts, coupling hubs, and pinion blanks.

• Mining Equipment: Drive train components subjected to shock loads and abrasive environments.

• Metallurgy & Cement Machinery: Gears and shafts for mills, rotary kilns, and conveying systems.

• Heavy-Duty Cranes & Hoisting Equipment: Load-bearing forged elements requiring high torque transmission capacity.

• Power Generation Equipment: Supporting high-speed, high-load mechanical systems in thermal or hydro power plants.

Frequently Asked Questions (FAQs)

1. Regarding the size of your forged products, what is the typical weight scope you accommodate? Our forging capabilities cover a spectrum from 100 kilograms up to 7,000 kilograms.

2. Do your services extend beyond forging to include thermal processing and material shaping? Affirmative. We provide comprehensive in-house heat treatment services, along with both preliminary and final machining operations.

3. What are the primary industrial sectors that you serve with your products? Our clientele spans various key industries, including wind power generation, heavy construction equipment, port infrastructure, power transmission systems, and numerous others.

4. What are your typical turnaround times for production? For items readily available in our warehouse, the estimated lead time is approximately 30 days. For custom orders requiring manufacturing, the typical timeframe is 40 to 45 days.

5. Could you provide information on the geographical placement of your manufacturing facility? Our production plant is located in Changzhou City, which is strategically positioned near Shanghai, and we utilize the Port of Shanghai for our shipping logistics.

Request a Quotation

To receive a detailed cost estimate and a tailored engineering approach, we encourage you to forward your technical blueprints and specific needs to our team. Our engineers will promptly evaluate your requirements and provide you with a professional quotation and a suitable solution.

About CHANGZHOU TIANGONG 

We are a Chinese company with over 30 years of forging experience. Our focus lies in the production of machine free forged products. We take pride in our independent quality assurance laboratory, which ensures that all our products meet our customers’ requirements. 

Our customers and partner value our products and services for 2 reasons: excellence and reliability.

Key figures 

A. Over 30 years professional free forging manufacturing experience

B. The company covers an area of 71,000 square meters

C. The construction area of the production workshop is 12,000 square meters

D. Total number of employees of 158

E. 28 engineering and technical personnel 

F. 59 skilled workers 

G. Annual production capacity is 38,000 tons

H. Steel throughput can reach 56,000 tons

Efficient and reliable solutions for customers

Industrial sector application

We design and manufacture forged parts for all industrial areas applying our experience and unique professionalism and taking the specific requirements of the markets into account. This has led us to become a forging industry leader in all industrial segments and collaborating with leading companies.

A. Wind power generation

B. Port Heavy Machinery

C. Mining

D. Ship Building

E. Chemical industrial

F. Oil industrial

G. Metallurgical industry 

H. Hydraulic industry 

I. Other high-end industrial equipment, gearbox body, parts and etc.

Customized solutions 

Modular processes allow us to engineer a solution for almost every industrial application requiring free forged parts. Our modularity means flexibility, a wide range of options, faster delivery, and most important of all, competitiveness.

All our products and production process have been designed to assure excellent, reliable and long lasting unique mechanical performances, resulting in reduced operating costs and long life.

With a wide range of products and a significant experience gained in most industrial applications, we can also provide complete engineering recommendation for customers.