Graphite Mandrel For Tube Bending

Graphite Mandrel for Tube Bending

Product Overview

Jincheng graphite mandrels for tube bending are precision-machined graphite rods and shaped mandrels designed for internal support during tube and pipe bending operations. These mandrels provide excellent surface finish and non-stick properties for smooth, high-quality bent tubes.

Our tube bending mandrels are manufactured from fine-grain isostatic graphite that provides good wear resistance and self-lubricating properties for smooth tube bending. Custom diameters, lengths, and tip shapes are available to match different tube bending applications and material types.

Key Features

• Excellent surface finish for smooth internal tube surface after bending
• Non-stick properties to prevent tube material from sticking to the mandrel
• Self-lubricating for smooth mandrel insertion and removal
• Good wear resistance for extended mandrel life in production bending
• Precision machined to tight tolerances for accurate tube diameter control
• Custom tip shapes for various bending radii and tube materials
• Various diameters available from small diameter tubing to large pipe bending
• Easy to machine and modify for custom bending applications

Technical Specifications

Applications

• Stainless steel tube bending for automotive and aerospace tubing
• Aluminum tube bending for heat exchanger and automotive applications
• Copper tube bending for plumbing and refrigeration tubing
• Titanium tube bending for aerospace and medical applications
• Exhaust pipe bending for automotive exhaust systems
• Tube bending job shops for custom tube bending services

Why Choose Jincheng Graphite Mandrels?

• Bending-grade graphite optimized for tube bending mandrel applications
• Precision CNC machining with accurate diameter and surface finish
• Custom mandrel design based on your tube material, diameter, and bending radius
• Competitive pricing as a direct graphite component manufacturer
• Fast delivery - standard mandrels within 3 days, custom within 1 week
• Technical support for mandrel design optimization and bending process improvement
• Consistent quality with strict diameter and surface finish control
• Global shipping to tube bending shops and manufacturers worldwide

Frequently Asked Questions

Q1: What diameter mandrel do I need for my tube bending application?
A: Mandrel diameter depends on your tube inner diameter and wall thickness. Typically, the mandrel diameter is 0.1-0.5 mm smaller than the tube inner diameter, depending on the bending radius and material. Please provide your tube dimensions for mandrel recommendation.

Q2: How long do graphite mandrels last?
A: Mandrel life depends on tube material, bending frequency, and lubrication. Under typical stainless steel tube bending conditions, graphite mandrels last 100-500 bends before needing replacement or regrinding.

Q3: Can you manufacture mandrels with custom tip shapes?
A: Yes, we can machine custom tip shapes (spherical, hooked, etc.) based on your bending application requirements. Please provide your mandrel drawings or bending specifications.

Q4: How do graphite mandrels compare to steel mandrels?
A: Graphite mandrels provide better surface finish and non-stick properties compared to steel mandrels, and require less lubrication. However, graphite mandrels are more brittle and may need more careful handling.