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New Carbon Steel Projection Spot Welder For Automotive Brake Base Plate Welding
Basic Properties
Place of Origin:Sichuan, China
Brand Name:Xingwei
Certification:CE, RoHS, ISO
Trading Properties
Minimum Order Quantity:1 set
Price:$20,000-25,000 / set
Delivery Time:25-45 working days
Payment Terms:L/C,D/A,D/P,T/T,Western Union
Supply Ability:3 sets per month
Specifications
| Product Name: | New Carbon Steel Projection Spot Welder For Automotive Brake Base Plate Welding | Rated Capacity: | 100-250KVA |
|---|---|---|---|
| Voltage: | 380 V, 220 V, 440V | Condition: | New |
| Dimensions: | 1200*1700*2200mm | Rated Duty Cycle: | 50% |
| Warranty: | 1 Year | After Warranty Service: | Video Technical Support, Online Support And Spare Parts |
| Highlight | projection spot welder,projection resistance seam welder,250kva spot welder |
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Product Description
MFDC Projection Spot Welder for Automotive Brake Base Plate Assembly
Intelligent MFDC Welding System for Safety-Critical Brake Components — 100-250KVA, Dual-Mode Spot and Projection, PLC with Multi-Recipe Storage
Technology
MFDC Inverter
Power Range
100 - 250 KVA
Weld Modes
Spot + Projection
Weld Capacity
Up to 6.0+6.0mm
Why MFDC Technology Matters for Brake Component Welding
Automotive brake base plates are safety-critical components. A weld failure between the base plate and its fasteners (nuts, bolts, mounting brackets) is not a quality defect — it is a potential vehicle safety incident. Traditional AC spot welders struggle with the consistency demands of this application: power factor variation, electrode wear drift, and limited process feedback make it difficult to guarantee every weld meets automotive specifications across extended production runs.
This Xinwei MFDC projection welder addresses the problem through medium-frequency direct current technology. MFDC delivers a near-unity power factor with precisely controlled current waveform, enabling consistent nugget formation even on coated or slightly corroded carbon steel surfaces (Q235, SPHC). The servo-driven or high-precision pneumatic pressurisation maintains constant electrode force throughout each weld cycle, while the PLC touchscreen stores multiple weld recipes for different brake plate variants. Optional real-time current monitoring and pressure feedback provide the process documentation that automotive Tier-1 quality auditors expect.
Critical Advantages for Automotive Brake Production
1. MFDC Power Source: Consistent Nugget Quality Across Production Shifts
Unlike AC welders where power factor fluctuates with line conditions and electrode wear, MFDC technology provides a stable, precisely controlled DC output. The current waveform is programmable through the PLC, allowing optimisation for the specific carbon steel grade and coating condition of each brake plate variant. The result is uniform weld nugget size and pull-out strength from the first part of the morning shift to the last part of the night shift.
2. Dual-Mode Spot and Projection: One Machine for Multiple Joint Types
The welder supports both spot welding (for sheet-to-sheet lap joints on the brake plate assembly) and projection welding (for nut, bolt, and bracket attachment). This dual capability means a single machine can handle the complete fastener welding sequence on a brake base plate. Switching between modes is a PLC recipe change, not a hardware reconfiguration.
3. Servo or Precision Pneumatic Pressurisation: Constant Force, No Drift
Electrode force is a primary determinant of weld quality. The servo motor or high-precision pneumatic system maintains the programmed force throughout each weld cycle, compensating for electrode cap deformation and workpiece thickness variation. This prevents the two most common brake plate welding defects: weak welds from insufficient force and workpiece distortion from excessive force.
4. Scalable Automation: From Standalone to Fully Integrated Robotic Cell
The base configuration operates as a standalone station with automatic positioning, welding, and inspection. For high-volume production, the system can be integrated with a robotic part-handling system or a rotary multi-station table for continuous automated welding. This scalability protects the investment: start with manual loading and upgrade to full automation as production volumes grow.
MFDC vs AC Welding for Automotive Safety Components
| Factor | Conventional AC Welder | Xinwei MFDC Projection Welder |
|---|---|---|
| Power Factor | 0.4-0.6; fluctuates with line conditions | Near unity; stable regardless of line variation |
| Coated Steel Capability | Inconsistent; coating can cause expulsion and spatter | Programmable waveform; handles coated and lightly corroded surfaces |
| Electrode Wear | Higher; more frequent tip dressing required | Lower; DC output reduces electrode erosion and spatter |
| Process Monitoring | Limited to basic current check | Optional real-time current and pressure feedback per weld |
| Automation Integration | Difficult; limited control interface | PLC-based; robotic and rotary station ready |
Application Scenarios
● Brake Base Plate Fastener Welding
The core application: welding nuts, bolts, and mounting brackets onto carbon steel brake base plates (Q235, SPHC). Projection welding mode ensures full penetration at each fastener contact point. The MFDC power source handles the thermal demands of thick plate combinations up to 6.0+6.0mm.
● Tier-1 Automotive Supplier Production Lines
The PLC multi-recipe storage enables quick changeover between different brake plate part numbers. Optional real-time monitoring provides current and pressure data per weld for PPAP documentation and ongoing statistical process control (SPC) reporting required by automotive OEM quality systems.
● General Carbon Steel Structural Welding
Beyond brake components, the 100-250KVA power range and dual-mode capability make this machine suitable for other carbon steel structural assemblies requiring high-integrity projection or spot welds on material thicknesses from 1mm to 6mm.
Core System Breakdown
| Subsystem | Specification | What It Delivers |
|---|---|---|
| MFDC Power Source | 100-250KVA, 1000Hz inverter, 3-phase 380V input | Stable DC output; near-unity power factor; low spatter |
| Pressurisation | Servo motor or high-precision pneumatic | Constant force; no drift; prevents weak welds and distortion |
| PLC + Touchscreen | Multi-recipe storage, quick changeover | One-touch brake plate variant switching; production data logging |
| Dual Cabinet | Separate power and control cabinets | Thermal isolation; easier maintenance access |
| Water Cooling | 20 L/min, anti-rust treated waterways | Sustained high-duty-cycle operation; no overheating downtime |
| Process Monitoring | Optional current + pressure feedback | Per-weld quality verification; automotive audit compliance |
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 100 / 160 / 200 / 250 KVA |
| Input Power | 3-phase AC 380V (220V, 440V available) |
| Max Short Circuit Current | 30 - 45 KA (model dependent) |
| Duty Cycle | 50% |
| Max Welding Capacity | 3.0+3.0 to 6.0+6.0mm (model dependent) |
| Max Electrode Force | 6,000 - 15,000 N |
| Electrode Length | 450 - 500mm |
| Working Stroke | 80mm |
| Cooling Consumption | 20 L/min |
| Welding Modes | Spot + Projection (dual mode) |
| Control System | PLC + Touchscreen, multi-recipe storage |
| Automation Option | Robotic or rotary multi-station integration |
| Dimensions | 1200 x 1700 x 2200mm |
| Warranty | 1 Year |
| Certifications | CE, RoHS, ISO |
Why Choose Xinwei for Brake Component Welding
| Feature | Your Benefit |
|---|---|
| MFDC Inverter Technology | Stable DC output for consistent nugget quality; low spatter reduces post-weld cleaning |
| Dual-Mode Spot and Projection | One machine handles sheet-to-sheet and fastener welding on brake plates |
| PLC Multi-Recipe Storage | Store parameters per brake plate part number; instant changeover between variants |
| Servo/Pneumatic Force Control | Constant electrode force cycle to cycle; prevents weak welds and plate distortion |
| Optional Process Monitoring | Real-time current and pressure data for automotive quality documentation |
| Automation-Ready Architecture | Upgrade path from standalone to robotic or rotary multi-station integration |
Free Welding Sample Test
Need to verify weld integrity on your specific brake base plate design?
Send us your brake base plate samples, fasteners (nuts, bolts, brackets), and material specifications. Our engineering team will configure the appropriate model, perform test welds, and provide destructive test results (pull-out strength, cross-section analysis) before you make any purchase commitment.
▶ Email info@xwweld.com or call +86-13378111895 to start your free welding test.
Quality Assurance
- CE, RoHS, and ISO certified — compliant with international automotive supplier quality standards
- 1-year comprehensive warranty with video technical support, online assistance, and spare parts
- Field installation, commissioning, and operator training included in after-sales service
- Pre-delivery weld testing with actual brake plate samples and fastener types before factory release
- Low-noise, low-fume design — improves workshop environment for operators during continuous production
Frequently Asked Questions
Q: What KVA rating do I need for my brake plate application?
A: The 100KVA model handles up to 3.0+3.0mm, 160KVA up to 4.0+4.0mm, 200KVA up to 5.0+5.0mm, and 250KVA up to 6.0+6.0mm. Our engineers can recommend the correct rating based on your specific plate thickness, fastener type, and required production rate after reviewing your part drawings.
Q: Can this welder handle coated or oiled carbon steel plates?
A: Yes. The MFDC power source can be programmed with a pre-heat phase or controlled up-slope to burn through light coatings or residual oil before the main welding current is applied. This is a key advantage over AC welders, which often produce inconsistent results on coated surfaces.
Q: Can the machine be integrated into an existing automated production line?
A: Yes. The PLC-based control architecture supports integration with robotic part handling and rotary multi-station systems. Communication protocols can be configured to interface with your line controller. Xinwei can provide integration support as part of the commissioning service.
Q: Is real-time weld quality monitoring available for audit compliance?
A: Yes. Optional current monitoring and pressure feedback modules capture per-weld data that can be exported for PPAP documentation and ongoing SPC reporting. This supports the quality traceability requirements common in automotive Tier-1 and OEM supplier agreements.
Ready to Upgrade Your Brake Component Welding Quality?
Contact Xinwei for a model recommendation, quotation, and free welding sample test with your brake plate parts.
info@xwweld.com | +86-13378111895
Contact Details
Chengdu Xinwei Welding Technology Co., Ltd.
Contact Person: Mr. Wang
Tel: 86-28-84208558
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