Rebar Cold Extrusion Machine raw material inspection: from a variety of specifications each batch of purchased raw materials, randomly selected 3 steel rods, and respectively intercept the original material to produce test pieces. Cold extrusion is one of the machining processes of no-chip, less-chip parts, so it is an excellent process method in metal plasticity processing. If the billet is heated to a temperature below the recrystallization temperature for extrusion, it becomes warm extrusion. Warm extrusion throw has the point of less and no chips.
The connection is the need to connect the end of the steel bar of Rebar Cold Extrusion Machine inserted into a special steel sleeve, the use of extruder compression of the steel sleeve, so that it produces plastic deformation, by the deformation of the steel sleeve and ribbed steel mechanical bite fastening force to achieve the connection of the steel bar. However, this sleeve has certain conditions, generally speaking, we only apply to the diameter of 16 ~ 40mm of secondary or tertiary steel, and secondly, cold extrusion steel connection sleeve can also be divided into mirror image extrusion and axial extrusion of two kinds, so in the selection of the time we please pay attention to.
Therefore, the percentage of joint area of tensile reinforcement in the sorghum is a bottom line, should not be crossed, other components can be relaxed, but must meet the requirements of the lap length. Such as general column reinforcement (especially structural columns), can also set a lap joint, which will facilitate the construction. Gross inspection: rough production of each process of operation workers should be processed rough dimensions of each self-inspection, quality inspector in the rough finished product according to 10% random sampling, in line with the requirements of the design drawings before transferring to the next process.
Cold extrusion reinforcing steel sleeve thread inspection: thread processing operators should carry out self-inspection on the processed threads one by one, and the products of Rebar Cold Extrusion Machine qualified by self-inspection can be put into the inspection area. The quality inspector in the waiting inspection area according to the continuous production of the connection sleeve. Extrusion is a process of forcing the metal mass to produce plastic flow, through the gap between the convex die and the concave die or the concave die outlet, to create hollow or section than the blank section of the part is smaller.
If the blank is extruded without heating, it is called cold extrusion. There are issues that need to be standardized in the construction of reinforcing bar connections, such as mechanical connections, the percentage of welded joint area should not be controlled according to the tensile zone. If the number of rebar singular of Rebar Cold Extrusion Machine, the percentage is slightly more than some are also in line with the requirements. Pressurized area is not restricted. Tied joint area percentage control: tensile reinforcement beams, plates, walls should not be large, when the project is necessary to increase the percentage of joint area, beam tensile reinforcement should not be greater than 50%, other components can be relaxed according to the actual situation.
