Quality control - Pradera Steel
Quality Controls in the production process
During the entire production process the material is subject to the most demanding quality controls.
- Dimensional: using digital micrometer and, laser measuring equipment continuously.
- Oval: using digital micrometer and, laser measuring equipment continuously.
- Straightness: in accordance to EN10278.
- Surface quality:
- Defectomat: Eddy-Current equipment for continuously detecting surface defects.
- Circograph: Eddy-Current equipment with rotating head for continuously detecting surface defects.
|According to EN10277-1||1 Class||2 Class||3 Class||4 Class|
|Maximum depth of defect||d ≤ 15 mm.||0,3 mm.||0,3 mm.||0,2 mm.||Technically manufacturing crack free|
|15 < d ≤ 20 mm.||0,02 x d||0,02 x d||0,2 mm.|
|20 < d ≤ 75 mm.||0,02 x d||0,02 x d||0,01 x d|
|75 < d ≤ 100 mm.||0,02 x d||1,5 mm.||0,75 mm.|
|Maximum percentage of weight supplied exceeding the specified level||4%||1%||1%||0,2%|
In addition to the controls and inspections carried out during the manufacturing process, a sample of this finished product is subject to the necessary tests for traction, strength, roughness, etc. required by our customers. To do this, our laboratory has been equipped with the following analysis systems:
- Universal traction testing machine: Too obtain the mechanical features of the calibrated material: Tensile strength, Yield strength, Elongation, Necking and others.
- Spectrometer: For the chemical analysis of any steel.
- Hardness tester: To check the hardness on the surface, in the core, etc.
- Roughness tester: To obtain roughness values Ra, Rz, Ry, etc.
- And a wide range of digital micrometers, calibres, rulers, etc.
Everything, so that our steel is the perfect steel for our customers.