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.
The Use Of Brown Control Bottle And Transparent Control BottleJuly 4, 2022The brown control bottle is literally understood as a control bottle with a brown body color. Its characteristic is to avoid the corrosiveness of light. Although the color is brown, the brown control ...view
A Sudden! A Container Ship Bound For The United Arab Emirates May Have Exploded After Leaking Steel DrumsJuly 1, 2022A container ship docked at Jebel Ali port in Dubai, United Arab Emirates, accidentally caught fire and exploded Wednesday night, causing a huge fireball to light up the night sky and tremors to be fel...view
Power Rationing Sports Carbon Reduction Is UnsustainableJune 30, 2022Recently, Power Rationing has boarded the network hot search again.According to the announcement of relevant departments, the reasons for switching off and power rationing vary from place to place. In...view
Indian Scrap Market Is Stable And Expected To RiseJuly 1, 2022Indian imported scrap prices have remained stable on-week on the back of limited buying interest from the mills.UK-origin and US-origin shredded scrap offers have firmed at $525-530/tonne CFR Nhava Sh...view
Drum Liners for Steel DrumsApril 27, 2023Drum liners are an essential component for many industrial applications that require the transportation or storage of liquid or powdered materials. When it comes to steel drums, drum liners are partic...viewSpot Market For Raw MaterialsJuly 1, 2022Import mine: on April 8th, the spot market activity of imported iron ore in the area along the Yangtze River has picked up somewhat compared with the earlier stage, the trade newspaper has improved th...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
