Nondestructive product testing and weld inspection
We are trying to responde very fast and flexible to engineering companies‘ needs and requirement all over the czech republic.
The company WELDINSPECT s.r.o. was founded on 27th October 2015 and builds on activity of company two people Mr. Miroslav Vodička and Mr. Tomáš Rykala.
This company is operate on the market of nondestructive testing (NDT-Non Destructive Testing) from 2013. During this short time company found many eminant czech, international customers or small engineering companies in different regions in the Czech Republic. At this time we are preparing expand of service in welding. Our goal is to offer in nearby future for customer complete service as:
- transport to customer
Experienced workers will take care of agreed projects. They have all authorization necessary for this service. We are certified, complete information are in described methods of NDT, acc. to ČSN EN ISO 9712 level 2. We cooperate with inspector certified in level 3 and we make all necessary procedures with him.
Inspection of welds
Is searching of superficial and internal defects of welds by using of MT, PT, UT, RT methods. Inspections is used in every stage of unfinished welds and complete weldments too.
Inspection of castings
Is searching of superficial and internal defects of castings by using MT, PT, UT, RT methods. Interoperative inspection before thermal processing, final inspection before dispatch. We have many experience with castings from high-alloyed metal and austenized metal too.
Inspection of forgings
Is searching of superficial and internal defects of castings by using MT, PT, UT, RT methods. We have experience with small forgings as bolts, nuts and screws and with big forgings too as shafts and pinions. The best was how to search the defect „ forging cross“ is by UT method.
Inspection of welding process
Our company start to offer new service connect with welding. Now is possible to make inspection during production, weld control, welder’s verification. We help companies to get necessary qualification WPQR and create procedures for welding WPS.
Non-destructive testing is now of the main activity to specife product quality. The goal is to check, if the part, product or part of product has no deviation from normative standards. If yes, then determinate their feature and position.
Detection, identification and localization present diagnostic technical condition of testing object. For fulfillment of this goal NDT is using many fyzical phenomenon and principals.
According to production documentation, necessary for testing, are usually used tests focused on searching superficial and internal defects in product. Most of these defects are caused during production of half-finished product (f.e. rolling) and their occurence can caused destruction of final product. As typical example we can state cracks in weld, as concentrator of tension. This can caused destruction of dynamic stressed construction, for example on bridges.
The ultrasonic testing
The ultrasonic testing is basic method of non-destructiv testing material. This testing is using ultrasonic waves in the object or material tested. Sound is introduced into the part by using an ultrasonic transducer that converts electrical impulses from the UT machine into sound waves, then converts returns sound back into electric impulses.
Liquid penetrant testing
The penetration test (PT) i sone of the most common method of non-destructive testing. IS suitable for searching of superficial defects. Especially PT is used is automotive, aeronautice, petrochemical and power engineering industry. PT method is most common especially in testing of weld joints.
The radiographic testing
The radiography is one of basic method of nondestructive testing of material. This method uses local change of radiation intensity passed through material. The radiography involves exposing a test object to penetrating radiation so that the radiation passes through the object being inspected and a recording medium placed against the opposite side of that object.
Magnetic particle testing
The magnetic partical testing (in american literature MPI) is on of the main method for testing of ferromagnetic part’s surface. The method is based on using magnetic field to locate surface discontinuities. Thanks to this phenomenom is possible to indicate defect with correct medium like magnetical dry powder or suspended in liquid solution.
Visual inspection is the oldiest and more easy of non-destructive inspection, which is used for survey of defects on surface of checked parts. We survey possible presence of defects as inadmisible unevenesses, weld deviations – size, spatters, cracks, cold welds in the are of weld root.
Inspection aktivity should be done because of many reasons. The main reason is to check, if the proces and resulting quality is enough where product design use.
Inspector must stand requirements and he compares properties and product’s characters. Inspector’s starting material is drawing documentation, technical and terms of delivery.
For inspector’s activity is necessary wide range of knowledge. The base is reading drawings and knoledge of inspection methods. Inspector must evaluate too:
- Meeting requirements acc. product rules (EN ISO 1090, EN ISO 15085 etc.)
- Suitability of using WPQR (Welding proces quality report) for production
- Using WPS in production
- Welder’s qualification for used material and welding methods
- Classification NDT inspection during and in the end of production
- Supervisions of NDT inspection
- Compliance of continuos fullfilment of ITP
Our offer for customers:
Welding supervision service acc. to EN ISO 14731
- Preparation of welding qualification WPQR
- Creation of welding procedures WPS
- Check of welding requirements
- Selection of suitable main and additional material
- Assistance during welder’s qualification acc. to EN ISO 9606-1, 9606-2, 14732
- Pre-production supplier’s audit
- Supervision and inspection during production
- Inspections finished production
- Inspection of compliance technological discipline
- Continous inspection of compliance of deadlines