GOM-CERTIFIED WELDMENT INSPECTION

3D Weldment & Fixture Inspection Services in India

Specialised 3D weldment and fixture inspection service India — capturing the full geometry of welded structures, fixtures, and jig systems with micron-level accuracy. OEM-grade deviation reports for automotive OEMs, heavy fabricators, and SPM manufacturers across India.

The Problem With Welded Assemblies

Welded Assemblies Look Right Until They Don't

Heat distortion, residual stress, datum movement, and tolerance stack-up happen invisibly during fabrication. 3D weldment inspection finds them before your OEM does.

Perfect CAD

Design Intent

Nominal CAD frame — all tolerances theoretically perfect and within spec.

Heat Input

Welding Process

Thermal energy from welding induces internal stresses, causing residual deformation.

Distorted

Actual Assembly

Weld pull shifts critical datum features. Mating surfaces no longer align with CAD.

Inspected

Inspection Result

Full deviation map reveals every shift, gap, and out-of-tolerance region across the assembly.

Heat Distortion Thermal deformation
Residual Stress Post-weld spring-back
Datum Movement Locator shift
Tolerance Stack-Up Compounded deviation
Why 3D Inspection is Essential

Why Welded Assemblies & Fixtures Need 3D Inspection

Traditional Inspection

Tape measure · Vernier · Spot checks only

5%
Geometry Visibility
VS

APJ 3D Inspection

Full deviation map · CAD overlay · Complete surface capture

100%
Surface Visibility
APJ 3D Inspection Process

Digital Weldment Inspection Pipeline

Hover the data nodes to rotate the core and view pipeline details.

01

On-Site or In-House Inspection

We deploy to your plant floor with MetraSCAN or HandySCAN, or bring the assembly to our controlled studio environment for sub-micron accuracy.

02

Full-Surface Scan Data Capture

Million-point cloud capture of the entire weldment or fixture geometry — no feature left unmeasured, including weld beads, locator pads, and datum surfaces.

03

CAD-to-Part Deviation Analysis

Best-fit or datum-constrained alignment of the scan to the nominal CAD model, producing a full colour deviation map of the entire welded structure.

04

GD&T Reporting & Documentation

True position, flatness, and angularity calls measured against datum references. Every critical feature is documented in a structured OEM-submission-ready report.

05

Root Cause & Corrective Action

We identify which weld sequence, fixture clamp, or locator is driving the distortion — giving your process team precise corrective data, not just a pass/fail number.

06

Engineering Report & OEM Submission

Detailed PDF + GOM project files delivered within agreed SLAs. Ready for PPAP, FAI, and direct submission to Tier-1 and OEM quality teams.

01On-Site / Studio
02Full-Surface Scan
03CAD Alignment
04GD&T Validation
05Root Cause
06Report & Submit
What We Inspect

Inspection Capability Matrix

Dimensional Inspection of Welded Assemblies

Full-surface 3D scanning of automotive sub-frames, chassis, structural sections, and welded fabrications against nominal CAD data.

Includes: deviation colour maps, critical feature GD&T callouts, weld distortion quantification, and AIAG-format dimensional reports for PPAP submission.

3D Fixture Validation and Jig Inspection

Precision measurement of welding fixtures, locator pins, datum clamps, and tooling plates to verify they hold the correct datum geometry throughout production.

Includes: locator position mapping, pin true position, clamp face flatness, fixture wear tracking over production cycles, and corrective shim recommendations.

Weld Assembly Deviation Analysis

Systematic identification of which weld sequence, electrode position, or clamp pressure is causing the dimensional deviation — not just where, but why.

Delivered as: root cause report, sequence-by-sequence deviation comparison, corrective weld parameter recommendations, and fixture adjustment data.

Welded Structure Inspection

On-site inspection of large fabricated machine bases, SPM structures, process equipment frames, and industrial steel constructions directly on the plant floor.

Delivered using: MetraSCAN or Creaform HandySCAN 3D, photogrammetry targets, and FARO tracker for assemblies exceeding 6m. Reports include full 3D annotation overlays.
01
Welded Assemblies
02
Fixture Validation
03
Deviation Analysis
04
Large Structures
Live Inspection Viewer

See What Traditional Measurement Misses

Hover the elements below to peel back the layers of inspection data.

CAD Nominal

Original Design Intent

Actual Scan

Raw Point Cloud Geometry

Deviation Map

The Final Truth

⚠ Locator Drift: 1.8mm
🔥 Weld Pull Zone
📐 Datum Reference A
Real Project Case Study

Engineering Investigation Board

Heat distortion causing chassis misalignment — hover the evidence to investigate.

1. The Problem

Frame Misalignment Post-Weld

Automotive sub-frame failing rear suspension mount fitment checks at OEM assembly. Traditional gauging showed "acceptable" but assembly failed repeatedly.

2. Scan Findings

Weld Pull on Datum Surface B

Full-surface MetraSCAN inspection revealed a 1.8mm datum shift at the rear locator face caused by excessive heat input on adjacent MIG welds.

3. Corrective Action

Sequence Correction & Fixture Adjustment

Sequence reordering + temporary clamping addition to datum B face reduced distortion to 0.12mm. OEM submission approved.

"APJ 3D pinpointed exactly which weld sequence was driving the datum shift. We'd been chasing this problem for three weeks. They solved it in one inspection visit."

— Quality Manager, Automotive Sub-Frame Tier-1 Supplier, Pune

Technical Service Overview Reviewed by APJ 3D Engineering Desk • Updated September 2026

What is 3D Weldment and Fixture Inspection Services in India?

Dimensional Inspection is the formal verification of physical components against engineering drawings and CAD models using bridge CMMs, portable articulated arms, optical comparators, and laser trackers.

When to Select This Service

Choose dimensional inspection for First Article Inspection Reports (FAIR), PPAP Level 3 supplier submissions, batch quality audits, and shop-floor fixture alignment adhering to ASME Y14.5 and ISO 1101 standards.

3D Weldment and Fixture Inspection Services in India Technical Specifications

Technical Capabilities & Verification Standards

Verified engineering parameters, hardware precision, and compliance benchmarks applied across all deliverables.

Engineering Parameter APJ 3D Capability & Precision Range Compliance Standard / Verification
Measurement Equipment Bridge CMM (ZEISS / Renishaw), Portable Romer Arms, Laser Trackers, Vision Measuring Systems ISO 10360 Precision Compliance
Measurement Uncertainty Bridge CMM: E0 = 1.5 + L/350 µm; Portable Arm: ±0.025 mm; Laser Tracker: ±0.015 mm/m NABL / ISO 17025 Calibrated Standards
GD&T Verification Full ASME Y14.5 & ISO 1101 evaluation (Profile, True Position, Runout, Parallelism, Perpendicularity) Automated Inspection Programs
Inspection Frameworks AS9102 FAIR (Aerospace), AIAG PPAP Level 3 (Automotive), ISO 9001 Batch Quality Audits Standard Ballooned Drawing Reports
Inspection Environment Class 10,000 Temperature & Humidity Controlled Metrology Laboratory (20°C ± 0.5°C) Standard Reference Metrology Environment
Software & Reporting ZEISS CALYPSO, PolyWorks Inspector, PC-DMIS, Geomagic Control X Comprehensive Graphical & Tabular PDFs
Turnaround Time 24 to 48 Hours for standard First Article & batch inspection lots Pan-India On-Site CMM Arm Support
FAQ

Frequently Asked Questions

What is included in a First Article Inspection Report (FAIR)?

A FAIR includes a ballooned engineering drawing matching every dimension to an itemized inspection table, raw actual values, upper/lower tolerances, out-of-spec flags, and tool calibration certificates per AS9102 or customer templates.

Can you inspect parts according to PPAP Level 3 requirements?

Yes. We generate full dimensional results, Gage R&R studies, process capability studies (Cp/Cpk), material test reports, and Part Submission Warrants (PSW) for automotive Tier-1 supplier audits.

Do you provide on-site inspection for large tooling and weld fixtures?

Yes. Our metrology team deploys portable articulated arms and laser trackers directly to your manufacturing plant for on-site jig alignment, weldment inspection, and stamping die verification.

How do you establish datum reference frames for GD&T inspection?

We align physical components using primary, secondary, and tertiary datum features (planes, cylinders, holes) as specified on engineering drawings per ASME Y14.5M, eliminating alignment ambiguity.

What turnaround time can we expect for batch inspection?

Standard First Article inspections deliver in 24 to 48 hours. Ongoing production batch inspections can be scheduled with dedicated capacity and automated CMM routines.

Know Exactly Where Your Weldment Deviates — Before Your OEM Does

Tell us your assembly type, fixture system, and tolerance requirements. Our metrology team will recommend the right weldment inspection solution and deployment approach for your facility.

ZEISS GOM Certified On-Site Deployment Pan India PPAP-Grade Reports