Certified welding company for demanding welding work, repairs and heat treatment of metallic materials
Daniel Linder GmbH welding & melting
Winterthur (CH)New on Amplifa
About Us
Daniel Linder GmbH welding & melting is a certified welding company in Winterthur specialising in demanding welding work, repair welding and heat treatment. In the 400 m² welding shop with cranes up to 5 t, welded constructions, hardfacing and modifications to heating boilers, ships, plants, machines and test benches are produced. The company joins difficult-to-weld materials and material combinations and holds more than one thousand validated welding procedure qualifications (WPQR) under various standards. In addition, welding procedure specifications (WPS), welding plans, test specifications, non-destructive testing (PT, VT Level 2) and welding defect analysis are offered. For heat treatment, a calibrated air-circulation furnace (max. 1050 °C, 2 t load capacity) and a mobile resistance annealing unit for on-site deployments are available. Customers include small and medium-sized enterprises as well as international corporations from mechanical engineering, pressure vessel construction, shipbuilding and plant engineering.
- Site
- Winterthur
- Processes
- Welding work (all common welding processes and standards), Repair welding (in-house and on site with mobile work equipment), Hardfacing, Special welding processes, Brazing/soldering, Fusion welding of metallic materials (EN ISO 3834-2), In-house heat treatment (calibrated air-circulation furnace, max. 1050°C, charging up to 950°C,, External/on-site heat treatment (mobile resistance annealing unit, calibrated up to 900°C, without
- Materials
- Metallic materials, Castings, Heat treatment, Hardfacing, Non-destructive testing (PT, VT Level 2)
- Certificates
- ISO 9001:2015, EN ISO 3834-2, AD 2000-Merkblatt HP 0, AD 2000-Merkblatt HP 0 (material transfer/re-stamping), ISO 9001:2015 (SQS), AD 2000 HP 0, NDT PT/VT Level 2
- Industries
- Mechanical engineering, Pressure vessel/boiler construction, Shipbuilding (marine diesel engines), Casting processing (pump components, castings), Plant engineering
- 01
Consulting, material selection & weldability assessment
- 02
Development & qualification of welding procedures (WPQR/WPS)
- 03
Welding preparation (metalwork, forming)
- 04
Welding work & repair welding (in-house or on-site)
- 05
Heat treatment (furnace or mobile)
- 06
Non-destructive testing (NDT) & documentation
- 07
On-site assembly / complete production
Materials & Processes
Metallic materials
Fusion welding to EN ISO 3834-2, including difficult-to-weld materials and material combinations.
Castings
Repair welding of castings and pump components.
Heat treatment
Calibrated air-circulation furnace up to 1050 °C as well as mobile resistance annealing unit up to 900 °C (calibrated) for on-site deployments.
Hardfacing
Weld-overlay cladding to extend the service life of components.
Non-destructive testing (PT, VT Level 2)
Testing of weld seams directly after welding to ensure the required quality.
Location
Winterthur
CHWelding shop and heat treatment
- Part weight / size
- Furnace load capacity 2 t (2000 × 1250 × 1100 mm)
- Materials
- Metallic materials, castings
- 400 m² welding shop
- Cranes up to 5 t
- Turntables
- Semi-automatic welding stations
- Calibrated air-circulation furnace (max. 1050 °C)
- Quenching water tank
- Mobile resistance annealing unit (up to 900/1200 °C)
- In-house testing facilities
Services & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Welding work (all common welding processes and standards)Joining | – | – | – | – | metallic materials, difficult-to-weld materials and material combinations |
| Repair welding (in-house and on site with mobile work equipment)Joining | – | – | – | – | metallic materials, castings, pump components, marine diesel engines |
| HardfacingJoining | – | – | – | – | – |
| Special welding processesJoining | – | – | – | – | – |
| Brazing/solderingJoining | – | – | – | – | – |
| Fusion welding of metallic materials (EN ISO 3834-2)Joining | – | – | – | – | metallic materials |
| In-house heat treatment (calibrated air-circulation furnace, max. 1050°C, charging up to 950°C,Heat treatment | – | 2000 mm × 1250 mm × 1100 mm | 2 t | – | – |
| External/on-site heat treatment (mobile resistance annealing unit, calibrated up to 900°C, withoutHeat treatment | – | – | – | – | – |
| Development and qualification of new welding procedures (WPQR, WPS)Engineering | – | – | – | – | – |
| Non-destructive testing (NDT) of weld seams (PT Level 2, VT Level 2)Testing | – | – | – | – | – |
| Destructive testing (by partner in-house)Testing | – | – | – | – | – |
| Metalwork for welding preparation and forming of weld seamsJoining | – | – | – | – | – |
| Mechanical precision work (via external partner)Machining | – | – | – | – | – |
| On-site assemblyAssembly | – | – | – | – | – |
| Complete production (mechanical machining + welding technology + engineering)Assembly | – | – | – | – | – |
| Welder trainingEngineering | – | – | – | – | – |
| Welding defect analysis / neutral centre of expertiseTesting | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Air-circulation furnace (calibrated) | – | 1 | 2000 mm x 1250 mm x 1100 mm, load capacity 2 t, max. 1050°C | – | Winterthur |
| Mobile resistance annealing unit | – | – | calibrated up to 900°C, without calibration up to 1200°C | – | mobile/on site |
| Turntables | – | – | – | – | Winterthur |
| Semi-automatic welding stations | – | – | – | – | Winterthur |
| Crane | – | – | Capacity 5 t, 400 m² welding shop | – | Winterthur |
Additional services
Reference customers
Quality & Certifications
The quality management system is certified to ISO 9001:2015 (SQS, reg. no. 42714); certifications to EN ISO 3834-2 and AD 2000-Merkblatt HP 0 including re-stamping authorisation are also held. Non-destructive testing is performed to PT and VT at Level 2; destructive testing is carried out in-house by a partner.
| Evidence | Winterthur |
|---|---|
| ISO 9001:2015 (SQS) | |
| EN ISO 3834-2 | |
| AD 2000 HP 0 | |
| NDT PT/VT Level 2 |
History
- 2016
Daniel Linder has been owner & managing director of Daniel Linder GmbH since 01.03.2016
- 2022
First issuance of the EN ISO 3834-2 and AD 2000 HP0 certificates by gbd Zert GmbH on 05.12.2022