Wear resistant steel bar
The company's leading products fall into three categories: 1、 Main power industry products; 2、 Special accessories for auxiliary equipment of power station; 3、 Main products of metallurgical mining industry
At present, most enterprises use round steel rolled by steel mills, because of its low hardness, only 12-25HR; The internal stress of the round bar is not relieved (it is easy to break the bar and is not wear-resistant); The internal organization of round steel is loose and not tight, and so on. Because of these defects, round steel used as a grinding rod will have great wear, prone to bending, breaking, winding, thin tips at both ends, low output, failure to achieve the expected qualification rate, and large workload in the subsequent magnetic separation link. The new alloy wear-resistant steel bar produced by our company is produced by a new method, and the size specifications can be adjusted according to customer needs, and the flexibility is greatly improved, eliminating unnecessary waste. At the same time, it prolongs the service life, improves the production efficiency of the mill, saves production costs, and reduces the labor of workers.
The characteristics of this wear-resistant steel bar are as follows:
(1) This grinding rod has low wear, high hardness (45-55HR), strong toughness, wear effect is 1.5-2 times of rolled steel rod, after conditioning and tempering to relieve internal stress, continuous rod, good straightness without bending the bar, will not be pointed at both ends. Good wear resistance, saving a lot of costs for customers.
(2) Using the new method of production, the size specifications can be adjusted according to customer needs, the flexibility is greatly improved, and unnecessary waste is eliminated.
(3) Extend the service life, save costs, reduce the labor of workers, do not worry about stopping the mill every day to add steel rods, and greatly increase the output.
Grinding rod ordering process: communicate with customers, understand customer needs (length, diameter, quantity and other parameters) --- steel mill to order raw materials--- raw materials after entering the factory inspection----- after passing the inspection with professional equipment, professional technology for professional tempering and heat treatment, straightness adjustment and other processes---- finished product inspection hardness, impact value, drop test, etc.---- all qualified and ready to go.
Relying on many years of experience in developing and producing wear-resistant materials, our company is committed to producing high-quality wear-resistant special grinding rods to serve rod mill users. At present, it has been exported to more than ten countries and regions, and has been trusted by users.
Wear-resistant steel rod
1. Production process of grinding rod products
Raw material inspection - blanking - grinding cutting burr - medium frequency heating furnace heating--- straightening---- quenching treatment - tempering treatment - testing - packaging
Two. Grinding rod mechanical properties table (HRC)
|GRINDING ROD DIAMETER(MM)||Surface hardness||Impact test Ak||Tensile strength mpa/mm2|
Three. Grinding rod product quality inspection regulations
1. Grinding rod cutting with sawing machine cutting, dimensional tolerance company subject to order requirements. After unloading, the two ends are thrown into R arcs with a polishing machine.
2. The surface of the grinding rod used for ball mill shall not have cracks, overburning, and cracks visible to the naked eye.
3. The straightness of the grinding rod is less than 0.2%. Diameter tolerance +0m; -1.5mm; Length tolerance +0m; -25mm, break less than 3%.
Four. Grinding rod product inspection method:
1. The surface quality of the grinding rod is checked with the naked eye.
2. The size and defects of the grinding rod are measured with vernier calipers, and the defective parts of the steel ball should be avoided when measuring. The length is measured with a meter measure.
3. The surface hardness of the grinding rod is determined by 1 point per meter, and the arithmetic mean is calculated.
4. Inspection of the non-straightness of the grinding rod: 5 pieces per shift, placed on the straightened iron frame, put one end together, and measure the distance between the other end and the straightened iron frame. Turn each product at least 3 times.
Five. Grinding rod product acceptance:
1. The quality and size of steel balls produced in each shift are strictly inspected according to the above standards and qualified into storage.
2. The hardness of the grinding rod is 5 per shift, if there is a steel ball unqualified, it should be retested with double the quantity, if there is still one unqualified, and the average value of all hardness values meets the required hardness regulations, it should be judged to be qualified, otherwise unqualified;
3. Factory sales grinding rod inspection
For each batch of grinding rods sold, the quality inspection department will test the size, appearance and hardness of the steel balls, the number of dimensional appearance inspection, 5 of each specification, hardness inspection, 3-5 of each specification, the judgment is the same as above.
Wear resistant steel bar / Cast steel balls / Forged steel balls