Friction Welding Machines
Rotary friction welding machines for electric vehicle batteries, camshafts, and pistons in the automotive industry and drill pipes for the oil and gas industry
LPR’s friction welding machines feature patented technology, such as hydraulic chuck structure, steel bar structure, friction welding apparatus, and power steering main shaft mechanics. Our product line includes CNC, servo, and hydraulic friction welding machines.
Our friction welding technologies are widely used by drilling pipe manufacturers in the oil and gas industry and automotive part manufacturers for camshafts, pistons, propeller shafts, engine valves, shock absorber rods, torque converters, and rear axle housings. LPR’s tubular friction welding solutions provide precise control over the joining time and forging force to minimize loss of your materials.
All of our friction welding machines are manufactured in South Korea. Machine installation and aftersales support are provided locally in USA and Canada for North American clients.
Rotary Friction Welding Process | CNC and Hydraulic Friction Welding Machines
The rotary friction welding machine is designed and built by U-Jin Tech, a leading manufacturer in the friction welding market in Korea who holds multiple patents on magnesium alloy welding technology and on mechanical structures, such as the friction welding apparatus, hydraulic chucks, and power steering main shaft mechanics.
We offer 2 types of rotary friction welding machine lines: CNC rotary friction welding machines or hydraulic friction welding machines, depending on clients’ preferences. Our rotary friction welding machines can also be fully automated, including automatic loading and unloading with a robot arm, and poka-yoke capabilities by measuring and monitoring the friction welded tube lengths during the process, which is the ideal friction welding solution for mass production factories.
Our clientele use our friction welding machines for the applications below:
Electric vehicle batteries, cam shafts, pistons, propeller shafts, drive shafts, intermediate shafts, inflators, copper rollers, track rollers, electrical connectors, drilling pipes.
Our model 8SF is the preferred choice for camshaft manufacturers in the automotive industry; model 100SF is widely used by track roller manufacturers in the heavy industrial equipment industry; our CNC 12DF is a favorite among propeller and drive shaft manufacturers. Please see our product line in the brochure, or view the Hydraulic Friction Welding Machines and the CNC Friction Welding Machines on this page. We offer customized options for various clients’ specific needs.
Friction Welding Combinations
Friction welding solves design challenges because friction heat creates a plastic zone between two work pieces where they can be forged together under external force. The complete interface is welded simultaneously, which creates no offset from thermally induced stresses and provides consistent, repeatable quality because the process is completely machine-controlled.
Welding Interface and Design
Bar + Bar
Bar + Bar
Considering the shape of the heat balance
Pipe + Bar
Pipe + Bar
Detail showing method of upset concealment
Pipe + Pipe
Pipe + Plate
Bar and Plate
Any forgeable material can be friction welded; this includes a wide range of metals, non-metals, and formed products such as castings or powder-metal parts. Many automotive part manufacturers reduce their manufacturing costs by replacing forged parts with sintered or powder metal pressed parts, in which case friction welding technology is used to weld partly forged material and powder pressed material together.
Friction Welding Combination Examples
Dissimilar metals can be joined
- Steel + Stainless steel
- Steel + Powder metal
- Cu, Al + Stainless steel
Non ferrous metal can be joined
- Al + Cu
- Al + Al or Cu + Cu
Hydraulic Friction Welding Machines
Hydraulic Rotary Friction Welding Machines
Welding cycle graphics (Touch screen PC)
- Shorten welding cycle time and increase efficiency
- Minimize human errors with a simple, easy to use design
- Automated welding allows for redeployment of skilled labor
|Nominal Forge Load|
|Typical Spindle Power|
|Max Spindle Speed|
|Max Weld Area |
CNC Friction Welding Machines | Precise Angle Control
CNC Friction Welding Machines
Welding cycle graphics (Touch screen PC)
- Reduce cycle time due to precisely controlled speed using servo motors
- Increase operational stability by reducing fluctuations in oil temperature
- Reduce the setup time by using a servo that automatically adjusts to the length of the material
CNC SF (Single Spindle)
CNC DF (Double Spindle)
CNC Friction Welding Machines for Shock Absorbers
CNC Friction Welding Machines for Drive Shafts
CNC Friction Welding Machine with 12 Ton Forging Force for Propeller Shafts
CNC Friction Welding Machine with 22 Ton Forging Force for Automotive Parts
Rotary Friction Welding Machine Options
Rotary Friction Welding Machine
- Displays important parameters
- Data from every weld is stored and easily retrieved
- Machine status and diagnostics
- Welding parameter database
- Record of each welding cycle
- Alarm conditions
- Applicable to rotary machines only (1-and 2-axis NC)
- I.D. or O.D. flash can be sheared off directly
- Applicable to non-rotary machines only
- Mechanically or electronically controlled angles on both ends of the product after welding when certain angles are required for the application such as propeller shafts
- Reduce cycle time via precisely controlled speed using servo motors
Business Case: Friction Welding for Oil & Gas Ball Drop System Supplier for Fracturing Ball Manufacturing
A Texas-based global oil & gas ball drop system supplier for oil and gas wells finds Model 50SF as an answer to its need to weld aluminum blanks with a wide range of lengths up to a maximum of 5,000 ㎟ welding area. Their aluminum balls are welded and processed for use as fracturing balls in wells.
This client provides drilling pipe solutions for technically challenging applications in open wells in the oil and gas industry. When we worked with this drill rod manufacturer, they were familiar with the advantages of friction welding over other conventional welding methods, and the friction welding technology, and were already equipped with a few friction welding machines at their factories.
They were interested in Model 50SF, a hydraulic based single friction welding head machine. They sent us their aluminum blanks as samples which we welded with our hydraulic friction welding machine and sent back for quality tests. The client conducted their own testing on the welded samples for any mismatch of axis measurements at weld, tensile strengths, and bend tests. After reviewing the test results, they visited U-Jin Tech’s manufacturing site in Korea and decided to purchase the Model 50SF because it has the capability to handle wider range of blank lengths than their current machines and reduces the loss of aluminum blanks with more precise control.
Our friction welding machines precisely control joining time and forging force required to minimize flash and material loss for manufacturers while achieving a high welding quality.
Business Case: Friction Welding for Automotive Shock Absorber Manufacturer
A global-sized shock absorber rod manufacturer selected our CNC double headed rotary friction welding machine for their steel double welded tube production plant when they needed to increase their production size with reduced cycle time and reduced material costs to meet their growing client base.
This client was looking to add a fully automated rotary friction welding line with an auto loading and unloading function, flash removal feature, and poka-yoke capabilities post welding at its mass production plant in Europe. Their limited floor space at the plant allowed only a well-integrated automatic friction welding line; the line designer had to be equipped with not only the knowledge about the friction welding technology but also a deep understanding of the client’s manufacturing process at the plant, in the automotive industry.
Our friction welding solution for this client was a CNC controlled 8 ton forging force machine with double rotary friction welding heads and a flash shearing unit attached to the line. The welding system was designed to check and monitor the friction force, forge force, total upset amount, main axis RPM, length of the weld, and the friction time for quality control of the welded joint from start to finish. The break for the spindle was designed to stop within 0.5 seconds along with other hydraulic parts to precisely control the weld time, rotation speed, and forge force.
The client’s need for the automatic integrated line provided us with the opportunity to demonstrate our core strength: rich experience and understanding about the automotive industry. From our total clientele base, over 75% are from the automotive industry. Our line design was submitted and approved within a short period of time and the client knew that their friction welding line was being built by a team familiar with automotive manufacturing processes. This client will be equipping the plant with more of these machines to continue supporting their production capacity growth.
We build fully automated friction welding lines for clients’ specific needs.