Open Die Forging Precision Forging Parts Ring 20CrMnMo 34CrNi3Mo

Production of open die forging free forged products for car and crane projects

A ring forging quenching device includes a water tank for quenching ring forgings, a water inlet pipe is arranged in the water tank, the end of the water inlet pipe is located in the center of the water tank, and the water outlet direction of the water inlet pipe is vertically upward, and the water inlet pipe is arranged in the water tank. A number of impellers and a driving device for driving the impellers to rotate are evenly arranged around the tank, and each impeller faces the central part of the water tank. The utility model is suitable for quenching ring forgings, which can make the temperature of the quenching medium uniform, which is beneficial to avoid cracking defects and low quenching efficiency in the quenching process of the ring forgings, and greatly improves product qualification rate and production efficiency.

The adopted manufacturing process of hardness homogenization inside and outside of forgings includes the following steps: Quenching: Heat the workpiece to 880±5°C as soon as possible, and then carry out the first heat preservation. The first heat preservation time is proportional to the thickness of the workpiece. When the thickness is 1 inch, the holding time is 0.5 to 1 hour. After the first holding period of time, water cooling is performed; The second holding time is proportional to the thickness of the workpiece. When the thickness of the workpiece is 1 inch, the holding time is 1 to 1.5 hours. After the second holding time, the temperature of the workpiece is lowered to 620±5℃ and then the third holding time is carried out. , The third holding time is proportional to the thickness of the workpiece. When the thickness of the workpiece is 1 inch, the holding time is 1 to 1.5 hours. After the third holding time, the forgings are obtained by air cooling to room temperature.
When heating large forgings, if the charging temperature is too high or the heating speed is too fast, the temperature difference between the core and the surface of the forging will be too large, resulting in excessive internal stress and cracks. Therefore, when heating large forgings, to prevent the furnace temperature from being too high and the heating speed being too fast, heat protection measures should generally be adopted.

Our workshop covers over 8000㎡, which include electric furnaces, die forgings machines, CNC machining center, heat treatment and all kinds of testing equipment. With these advanced facilities & instruments, we are able to supply the high quality castings and forgings to our customers, and make products meeting comprehensive inspection requirements on chemical composition, mechanical properties, non-destructive testing and high precise dimensional inspections.

Welcome to the Kingrail website. We're glad you stopped by and trust you will have a happy tour.

Kingrail is an international company offers diversified range of high-tech products and services and operates globally.

Core business is identified with three divisions:

1. High-end railway components – wheels, axles and wheelsets for high-speed applications, locomotives, passenger trains, trams and underground trains., rail road cars, light rail, street car, ballast vehicles, etc

2. Railway track materials: Tie plates, fishplates, clips, screw spikes, steel rails, etc

3. Forging and casting to drawings, for various applications such as power generation, oil and gas, offshore platforms, cement works, industrial plants, iron and steel production plants or shipbuilding.

Whether you need components or integrated systems, global tracking technology or performance analytics,Kingrail is always here at service for you!

Since 2002, we've been committed to having the world's highest standards in railroad wheel sets. But we don't set the standards; our customers do.

The hard and smart-working employees of Kingrail are dedicated to putting customers first. Over 200,000 squares of manufacturing space. We're armed with modern equipment, progressive production methods, and the confidence that comes with years of experience. We can take on any job. No matter what it is.

With roots deeply embedded in the railroad industry, we've grown to be a world-class supplier of customer satisfaction. From your first contact with us to the delivery of the product, we strive to make it easy for you. Kingrail staff are happy and pride working here because they love and happy for the job, care and happy for all the job they do.

So feel free to put us to the test – with something easy, or better yet, with something impossible. We're ready to show you what we can do.

Maanshan Kingrail Technology Co.,Ltd. is pleased to introduce ourselves as one of the leading manufacturer, stockist and supplies of Railcar spares and Railway Track Materials, Railway equipment, forging and casting metal products!

Equipped with forging lines:3T electro-hydraulic Hammer,2500T Hot Die press,1600T Hot Die press,400T Double plate Friction press,300T Double plate Friction press, Kingrail also equipped with fully machining and inspection equipment, Main machining equipments:CNC Lathes,Painting line,Continuous Heat-treatment Line,well type Furnace,Cutting machine,Robots, Main testing equipments;OES Metals Analyzer,CMM,Universal hydrankic testing machine.

Invest about 8% of the sales volume to be the R&D expenses, Kingrail introduce the world's leading technology combined with international high-tech talent to ensure the stable development of the company,and maintain long-term competitive advantage.

Kingrail have exported products over 50 countries such as US, Canda, UK, South Africa, Kenya, India, etc. Competitve quality and service are spoken highly by worldwide customers!

Kingrail made strict rules on all products, customer service is customer core value! 

Our vision:

* To be best supplier with world-Leading Capacities!

* 100% customer satisfication!

We are not the best now, but we strive to be better and better!