由 admin | 3 月 2, 2025 | Uncategorized
In the process of processing, transportation, storage, etc., the surface of the workpiece often contains oxide scale, rust mold residues, molding sand, welding slag, dust, oil and other dirt. In order to make the deep layer firmly attached to the surface of the...
由 admin | 3 月 2, 2025 | Uncategorized
(1) Friction coefficient: where F is the force that causes the initial slip of the specimen measured by the anti-slip test, and nf is the number of friction surfaces, which is the sum of the measured values of the high-strength bolt tightening pretension force...
由 admin | 3 月 2, 2025 | Uncategorized
(1) Weathering steel: The steel with corrosion resistance better than that of general structural steel is called weathering steel, which generally contains phosphorus, copper, nickel, chromium, titanium and other metals, so that the metal surface forms a protective...
由 admin | 3 月 2, 2025 | Uncategorized
1. If there is a gutter, the tie rod cannot be designed to be close to the top of the column, otherwise it may lead to the inability to install the downpipe. In addition, the location of the gutter downspout and tie rod and inter-column support must be considered,...
由 admin | 3 月 2, 2025 | Uncategorized
The main factors of steel structure damage are: (1) insufficient bearing capacity of the structure caused by load changes, overdue service, and changes in specifications and procedures; (2) The component is deformed, distorted, disabled, dented, etc. due to various...
