Closed steel drums have threaded plugs, while open steel drums have nuts on the drum hoops with bolts. Some factory inspectors will tighten loose plugs or bolts during regular inspections, thinking that this will prevent quality issues with steel drums. Experienced barrel makers say that it's best not to do this, because over-tightening plugs and bolts will increase the likelihood of problems.
When it comes to ensuring the efficiency of steel drum closures, it is crucial to follow proper bolt tightening methods. So, what methods are available to control bolt tightening?
Definition: A control method that stops tightening immediately when the tightening torque reaches a set control torque.
Advantages: Simple and direct control system, easy to check tightening quality with torque sensors or high-precision torque wrenches.
Disadvantages: Low control accuracy (torque error ±25%), and it cannot fully utilize the potential of the material.
Definition: A control method that tightens the bolt to a small torque first, and then tightens it a specified angle from this point.
Advantages: High precision of axial preloading of bolts (±15%), and can obtain a large axial preloading force with a value that can be concentrated around the average.
Disadvantages: The control system is more complex, requiring measurement of both torque and angle; and the quality inspection department may not find an appropriate method to check the tightening results.
Definition: A method of stopping tightening by tightening the bolt to the yield point.
Advantages: Tightening accuracy is very high, with a preloading force error that can be controlled within ±8%, but its precision mainly depends on the yield strength of the bolt itself, which requires careful selection of high-quality steel drum parts.
Disadvantages: The tightening process requires dynamic and continuous calculation and judgment of the slope of the torque and angle curve. The control system requires high real-time performance and computing speed.
Development History of Malleable IronApril 24, 2023During the First World War, the core issue of concern for wartime rations was whether they could reduce the losses caused by long-term transportation and storage. Glass packaging was not ideal due to ...viewCan't Open the Steel Drum Cover? Let Me Teach YouApril 28, 2023Steel drums are widely used in petroleum, chemical products, food and other fields. In order to prevent leakage of liquid and its corrosiveness, the metal lid and other accessories are generally used ...view
Industry Forum! China's Steel Drum Manufacturing Equipment Industry Developing From Large To StrongJuly 1, 2022In recent years, China's steel barrel manufacturing equipment industry has developed rapidly. New equipment manufacturing enterprises and new equipment and new technologies emerge one after anothe...viewOverview Of The Principle Of Mechanical SealJuly 4, 2022The mechanical seal is a shaft sealing device that relies on a pair or several pairs of end surfaces that slide relative to the shaft perpendicularly to the shaft under the action of the fluid pressur...view
ISDI: Precautions For Steel Drum Storage, Transportation And UseJune 30, 2022The correct storage and transportation of steel drums can help maintain the safety of employees, improve the transportation state and reduce quality problems.The transportation and hazardous materials...viewPerformance Test Of Transport PackageJuly 1, 2022Preparation before the test of the transport package1. Circulation environment analysisa. DefinitionCirculation: After a product is packaged, it forms a package. It is the entire process from leaving ...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
