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.
Performance Characteristics And Selection Guide Of Steel Drum Sealer GasketsJune 30, 20221. Standard seal washer seriesIn the concept of the Tri-Sure sealing system, rubber gaskets play a very important role in ensuring its well-known reliability. Tri-Sure gaskets are made of special form...view
Steelmakers Can Take Measures In The Face Of DifficultiesJuly 1, 2022Industry self-discipline is one of the important work of the association, and the association has been carrying out self-discipline work under the legal framework.Association will continue to strength...view
Properties Of NBR MaterialJune 30, 2022Nitrile rubber (NBR) is a copolymer of acrylonitrile and butadiene monomer. It is mainly produced by low temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, goo...viewNotice On The Key Work Of Brand Construction In The Packaging Industry In 2021-2July 1, 2022II. Continue to compile the Brand Development Report of China Packaging IndustryOrganize a team of experts to conduct in-depth research, further summarize the development trend, main results, innovati...view
Steel Drum LinerOctober 27, 2023The steel drum liner is a specially designed bag used as an interior lining for steel drums. It offers a convenient and effective solution for storing and transporting various types of materials. This...viewUnder Pressure! Steel Margins On Course To Contract By 2022July 1, 2022Recovering from the new covid-19 pandemic and pent-up demand has led to a surge in steel prices at a faster rate than raw materials, thus bringing huge profits to steelmakers.In 2021, the gap between ...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
