Piston Rod Heat Treatment Production Line | Forever Electromechanical

Introduction

Piston rods for hydraulic cylinders and shock absorbers demand stable surface hardness, uniform hardening depth and low deformation after heat treatment. Traditional box furnaces are troubled by long heating cycles, high energy consumption and inconsistent hardness, which easily cause rejected parts and hidden service risks. To meet the precise processing requirements of engineering machinery components, Forever Electromechanical launches the fully automatic piston rod heat treatment production line based on IGBT induction technology. This integrated line realizes continuous quenching and tempering for long piston rods, widely adopted by hydraulic parts manufacturers across global markets.

piston rod heat treatment production line

IGBT Induction Power Core, Efficient and Stable Heating

The production line is equipped with self-developed full-digital IGBT induction heating power supply, separated for quenching heating and tempering heating. Compared with old thyristor power supplies, its power factor reaches over 0.96, and electrothermal conversion efficiency is greatly improved. It cuts power consumption obviously and supports adjustable power output according to rod diameter and steel grade. Multiple protection functions including overcurrent, overvoltage, water shortage and overheating prevent sudden shutdown. The power cabinet can run continuously under heavy load, adapting to mass production of piston rods made of 45# steel, 40Cr and 35CrMo alloy steel.

CNC Scanning Heating & Closed-loop Temperature Control

Adopting rotary feeding and scanning induction heating structure, the line ensures the piston rod moves steadily and rotates evenly during heating, avoiding local overheating and bending deformation. The infrared temperature sensor forms a closed-loop feedback system, dynamically adjusting power and feeding speed. It accurately controls the quenching temperature and tempering temperature, keeping hardening depth tolerance within the required range. The annular spray quenching unit delivers even cooling, effectively reducing residual stress and cracking risk after quenching. Finished rods obtain matched hardness and toughness, suitable for subsequent chrome plating process.

Full Automatic Continuous Workflow, Easy Operation

The whole workflow covers automatic feeding, positioning, induction quenching, spray cooling, induction tempering, circulating cooling and discharging. Controlled by PLC touch screen, operators can store multiple process recipes for different piston rod specifications. Parameters can be switched with one click when changing workpieces. The modular layout saves workshop space and supports customized length range for long piston rods. The line greatly reduces manual intervention, lowers labor cost and stabilizes product consistency for batch orders.

Customized Solution & Global After-sales Service

Without open flame and heavy smoke, this induction heat treatment machine meets environmental standards of different countries. Forever Electromechanical provides non-custom design according to customer’s rod size, output and hardness requirement. The service package includes drawing confirmation, factory test run, on-site installation, technical training and long-term maintenance. This induction heat treatment solution helps hydraulic component manufacturers reduce reject rate, upgrade product quality and build stable competitiveness in the piston rod supply chain.

Overseas manager:Mr. Wang

Email:tom@foreverfurnace.com

Phone/Wechat/Whatsapp:+8613303078975