CZ-MA Saddle Welder
CZ-MA is a compact CNC multi-axis automatic welding machine — also called an intersecting-line welding special machine — purpose-built for saddle (branch-to-main pipe) joints. Multi-axis servo linkage handles rotation, radial extension, vertical lift and torch oscillation, with closed-loop control delivering near-100% first-time NDT pass rates and 80%+ fewer defects than manual welding.
Overview
The saddle weld (saddle mouth weld seam) is formed by the curved intersection of the main pipe cylinder and the branch pipe, creating a saddle-like shape. Traditional manual welding is extremely difficult and results in unstable quality.
The CZ-MA was specially developed for this type of saddle joint fabrication. It is a compact CNC multi-axis automatic welding machine, also known as an intersecting line welding special machine.
The improved version can adapt to various welding processes, such as submerged arc welding (SAW), gas shielded welding (MIG/MAG), argon arc welding (TIG), and others.
Key features:
- Superior Adaptation to Complex 3D Saddle Welds: multi-axis servo linkage of rotation, radial extension/retraction, vertical lift and torch oscillation; dynamically adjusts torch angle to eliminate lack of fusion, overlap and undercut.
- Exceptional Welding Quality and Consistency: closed-loop control of speed, current, voltage and wire feed; first-time NDT pass rate approaches 100%, defect rate reduced by over 80% vs manual.
- Simple and Intelligent Programming: input main pipe OD, branch diameter, intersection angle, curvature and thickness — auto-generates saddle trajectory; includes breakpoint memory, fault recovery, automatic repositioning.
- Automatic Multi-Layer Multi-Pass Welding: single-layer or multi-layer multi-pass with smart bead overlap; thick-wall vessels & boiler nozzles welded in one operation.
- Wide Material and Application Compatibility: carbon/low-alloy/stainless/aluminum/heat-resistant steel; 90° orthogonal, 30°–75° oblique, flanged nozzles, head pipe seats, eccentric saddles.
Industries Served
Specifications & Configuration
| Parameter | Specification |
|---|---|
| Machine Type | CNC Multi-axis Automatic Saddle Welder |
| Welding Processes | SAW / MIG-MAG / TIG (and others) |
| Motion Axes | Rotation + radial extension/retraction + vertical lift + torch oscillation |
| Control | Closed-loop servo linkage |
| Programming | Auto saddle-trajectory from main OD, branch dia., angle, curvature, thickness |
| NDT Pass Rate | First-time approaches 100% |
| Defect Rate | Reduced >80% vs manual welding |
| Welding Mode | Single-layer / multi-layer multi-pass (auto bead overlap) |
System Composition
The custom system is built from these modules:
Multi-axis Servo Linkage
Rotation, radial extension, vertical lift & oscillation synchronized precisely
Welding Head (SAW/MIG/TIG)
Swappable for submerged arc, gas-shielded or argon arc processes
Trajectory Controller
Auto-calculates saddle path from input parameters; breakpoint memory
Automatic Repositioning
Fault recovery & auto re-alignment for reliability
CNC Control System
Closed-loop control of speed, current, voltage & wire feed
Control System & Software
Industrial HMI Touchscreen Controller
- Auto Saddle Trajectory: Generates program from pipe OD, branch dia., angle & thickness
- Breakpoint Memory: Resume exactly from stop point after interruption
- Fault Recovery & Repositioning: Automatic re-alignment for maximum reliability
- Closed-loop Control: Travel speed, current, voltage & wire feed all precise
- Multi-layer Multi-pass: Smart bead-overlap allocation, no manual scribing
- Bilingual Interface: English / Chinese switching
Weld Sample Results
