When the pump tubing is welded, proper preheat and interlayer temperature must be applied, otherwise cracking will occur. Preheating, interlaminar temperature, and welding heat will degrade the microstructure and mechanical properties of the heat-affected zone, so heat treatment after welding is required to restore the heat-affected zone to the desired properties. Carbon steel castings have been annealed before welding. Does not hinder welding, but makes welding easier. If you want to improve the performance of the welded joint after welding, you need to heat treatment.
Tower Crane cabin is the control center of the crane and is attached to the slewing unit. In order to get to the tower crane cab, the operator must climb a series of ladders within the mast.
The movement of the tower crane is controlled from the operator's cabin. Within the tower crane cabin, you'll find the operator's chair with joystick controller, electronic monitoring devices, and communication systems. Many cabins come with climate control to ensure a comfortable work environment. The Operator Cabin for Tower Crane is part of the slewing assembly.
A cabin for a tower crane is a small enclosed space located at the top of the tower crane Mast Section or tower crane jib. It is where the crane operator sits and controls the crane's movements and operations. The tower crane cabin is typically made of steel or aluminum and is designed to provide a safe and comfortable working environment for the operator. It is equipped with controls, instruments, and communication systems that allow the operator to maneuver the crane, lift and lower loads, and communicate with other personnel on the construction site. The cabin is often equipped with heating and air conditioning systems to ensure the operator's comfort in various weather conditions. Safety features such as guardrails, harness attachment points, and emergency controls are also included in the cabin design to protect the operator in case of accidents or emergencies. Tower Crane Cab,Tower Crane Cabin Chair,Tower Crane Operator Cabin, Operator Cabin for Tower Crane,Driver's Cabin for Tower Crane SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.sytopkittowercrane.com
In order to ensure that the heat-treated base metal before welding has a good welded joint, low-hydrogen welding materials must be used and low-hydrogen welding conditions must be ensured . The welding material of the crucible pump tube must be strictly dried before use. In general, the heat treated mild steel arc welding is not preheated, but should be preheated if the metal temperature is less than about 10°C. In addition, if the plate thickness is greater than 25.4mm or the joints are constrained, preheating should be performed. Preheating temperature ≥ 40°C. As the case may be, for medium-carbon structural steels, if the helium pump fittings require welding of heat-treated components, they must be welded. Take measures to prevent cracking.