山東焊接專機的選用是制定焊接工藝的一項重要內容，涉及的因素很多，但應注意以下幾個方面的因素。

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.被焊結構的技術要求

1. Technical requirements for welded structure

被焊結構的技術要求包括被焊結構的材料特性、結構特點、尺寸、精度要求和結構的使用條件等。

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

如果焊接結構材料為普通低碳鋼，選用弧焊變壓器即可;如果焊接結構要求較高，并且要求低氫型焊條焊接，則要選用直流弧焊機。

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，則可使用電渣焊機;如果是棒材對接，可選用冷壓焊機和電阻對焊機。對活性金屬或合金、耐熱合金和耐腐蝕合金，根據具體情況，可選用惰性氣體保護焊機、等離子弧焊機、電子束焊機等。對于大批量結構形式和尺寸固定的焊接結構，可以選用專用焊機。

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.實際使用情況

2. Actual use

不同的焊接專機，可以焊接同一焊件，這就要根據實際使用情況，選擇較為合適的焊接專機。如在野外焊接時缺泛電源和氣源，則只能選擇柴(汽)油直流弧焊發電機等弧焊發電機作為焊接專機。

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.

對焊后不允許再加工或熱處理的密精焊件，應選用能量集中、不需添加填充金屬材料、熱影響區較少、密度高的電子束焊機。

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.經濟效益

3. Economic benefits

焊接時，焊接專機的能源消耗是相當可觀的。選用焊接專機時，應考慮在滿足工藝要求的前提下，盡可能選用耗電少、功率因素高的焊接專機。

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.

焊接專機的選用會涉及什么因素？以上我們從三個方面來講解了一番，更多相關內容就來我們網站http://www.fangzh.cn咨詢吧！

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.fangzh.cn Consult!