Quality Control

QUALITY CONTROL

The Quality control Measures Adopted As per QAP – Quality Assurance Plan

Process - Raw Material Components Test.

Input – QC Check During Manufacturing Process.

Output – Final Inspection before offering the material to Purchaser and acceptance test.

Chemical Laboratory
A full-fledged laboratory within the premises of the plant is set-up having facilities to determine every elements like Carbon, Manganese, Sulphur, phosphorus, Silicon etc. as per requirement of relevant BIS and other standards. Determination of elements are being done by volumetric test i.e. Titration method. The Plant can also undertake elementary testing by Spectro Analysis from outside source.

Mechanical Testing Universal testing Machine (Tensile Testing Machine) of 100Kn. capacities with calibration up-to-date has been commissioned for determination of tensile strength, yield stress and percentage of elongation. With the help of this machine, one can hold bend test with required sizes of Mandrels.

Quality Assurance This unit has established its Quality Assurance Plan and in practice for strict/ rigid on – line stage inspection, sampling and testing is to be done as per Scheme of Testing under qualified technical staff.

Other Important Features

Man Power Highly qualified and renowned persons are associated with this unit having track record experience in the field of structural Re-rolling Mill for ensuring quality product.

Quality Since the mill is fully-automatic and on fibre bearing, the finishing time is reduced considerably so as to maintain material temperature at finishing stage (800-825 degree centigrade) in avoidance of defamation. Speedy finish enhancing the surface finish and ensuring quality products.

Fixed Length Since no man power is involved during the stage of production, the handling of bigger and heavier pieces for rolling possess no problem offering fix –length to consumers thereby, reducing wastage to the end-users.

Source of Raw – Material Billet with confirmed chemistry as per relevant specification are being mainly procured from Prime Producers so that finished products would conform to the required standard and to meet costumer’s need.

NIRMAAN TMT QUALITY ASSURANCE PLAN
INSPECTION & TESTING PLAN
Sr. No. Component / Oprations & Description of Test Ref. Doc Acceptance Norms Sampling Plan Manufacturer Customer/TPI Agency
1.0 RAW MATERIAL/BILLET
A Chemical Test IS 2830 :2012 Heat wise 2 Sample per heat N.A.
B Cutting of Billets 100% 100% N.A.
C Grinding & Chipping 100% 100% N.A.
2.0 INPROCESS INSPECTION
A Furnace Temperature IS 1786 : 2012, IS 1608 : 1995 & IS 1599 : 2012 Check Every hour Check Every hour N.A.
B Rolling 100% 100% N.A.
C End Cutting 100% 100% N.A.
D Tempring 100% 100% N.A.
E Bundling 100% 100% N.A.
F Deformation and Surface Characteristics IS 1786 : 2012, Cl. 5.2 to 5.6 100%100% N.A.
3.0 FINAL INSPECTION
a Dimension, & Tolerences IS 1786 : 2012, Cl. 6 & 7 Table 1 & 2 100% 100% 10% in Lot
b Rib Area IS 1786 : 2012, Cl. 6 & 7 Table 1 & 2 1 sample per size 1 sample per size 1 sample per size
c Weight/Mtr. IS 1786 : 2012, Cl. 6 & 7 Table 1 & 2 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes
d Tensile Test IS 1786 : 2012, IS 1608 : 1995 Cl 8.1 & 9.2 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes
e Chemical Test IS 1786 : 2012, IS 1608 : 1995 Cl 4.2 1 Sample of 100 tonnes or less from the same cast 1 Sample of 100 tonnes or less from the same cast 1 Sample of 100 tonnes or less from the same cast
f Bend Test IS 1786 : 2012, & IS 1599 : 2012 Cl 8.2 & 9.3 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes
g Re-Bend Test IS 1786 : 2012 Cl 9.4 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes 2 Sample for Cast below 100 Tonnes/ 3 sample for cast above 100 tonnes