山东焊接专机的选用是制定焊接工艺的一项重要内容，涉及的因素很多，但应注意以下几个方面的因素。

The selection of Shandong special welding machine is an important part of the development of welding technology, which involves many factors, but the following factors should be paid attention to.

1.被焊结构的技术要求

1. Technical requirements for welded structure

被焊结构的技术要求包括被焊结构的材料特性、结构特点、尺寸、精度要求和结构的使用条件等。

The technical requirements of the structure to be welded include the material characteristics, structural characteristics, dimensions, accuracy requirements and service conditions of the structure.

如果焊接结构材料为普通低碳钢，选用弧焊变压器即可;如果焊接结构要求较高，并且要求低氢型焊条焊接，则要选用直流弧焊机。

If the welding structure material is ordinary low carbon steel, arc welding transformer can be selected; If the welding structure requirements are high and low hydrogen electrode welding is required, DC arc welding machine shall be selected.

如果是厚大件焊接，则可使用电渣焊机;如果是棒材对接，可选用冷压焊机和电阻对焊机。对活性金属或合金、耐热合金和耐腐蚀合金，根据具体情况，可选用惰性气体保护焊机、等离子弧焊机、电子束焊机等。对于大批量结构形式和尺寸固定的焊接结构，可以选用专用焊机。

If thick and large pieces are welded, electroslag welding machine can be used; For bar butt welding, cold press welding machine and resistance butt welding machine can be selected. For active metals or alloys, heat-resistant alloys and corrosion-resistant alloys, inert gas shielded welding machines, plasma arc welding machines, electron beam welding machines, etc. can be selected according to specific conditions. For welding structures with fixed structure and size in large quantities, special welding machines can be selected.

2.实际使用情况

2. Actual use

不同的焊接专机，可以焊接同一焊件，这就要根据实际使用情况，选择较为合适的焊接专机。如在野外焊接时缺泛电源和气源，则只能选择柴(汽)油直流弧焊发电机等弧焊发电机作为焊接专机。

Different special welding machines can weld the same weldment, so it is necessary to select a more appropriate special welding machine according to the actual use. In case of lack of flood power and gas source during field welding, only diesel (steam) oil DC arc welding generators and other arc welding generators can be selected as special welding machines.

对焊后不允许再加工或热处理的密精焊件，应选用能量集中、不需添加填充金属材料、热影响区较少、密度高的电子束焊机。

For the dense weldments that are not allowed to be reprocessed or heat treated after welding, the electron beam welding machine with concentrated energy, no need to add filler metal materials, less heat affected zone and high density shall be selected.

3.经济效益

3. Economic benefits

焊接时，焊接专机的能源消耗是相当可观的。选用焊接专机时，应考虑在满足工艺要求的前提下，尽可能选用耗电少、功率因素高的焊接专机。

When welding, the energy consumption of the special welding machine is considerable. When selecting a special welding machine, it shall be considered that the special welding machine with low power consumption and high power factor shall be selected as far as possible on the premise of meeting the process requirements.

焊接专机的选用会涉及什么因素？以上我们从三个方面来讲解了一番，更多相关内容就来我们网站http://www.tayfsk.com咨询吧！

What factors will be involved in the selection of special welding machine? We have explained the above from three aspects, and more relevant content will come to our website http://www.tayfsk.com Consult!