防爆电机铁芯的好与坏，对整台防爆电机的质量起着至关重要的作用。铁芯质量差，防爆电机的cos要降低；因铁损耗增加，效率也要降低；因空载电流大，负载电流随之增大，温升也要升高；电磁噪声要增加；毛刺大、叠压不齐，对绝缘有直接损伤，是绕组故障的祸根。为了防止因铁芯质量差，绝缘易受损伤，制造厂不得不采取消极的措施--增加主绝缘厚度，浪费材料，提高了防爆电机成本，散热也差，而转子铁芯菱形还影响动平衡的精度。这个是防爆电机铁芯故障的危害。防爆电机铁芯的故障，严格的讲，指的是铁芯制造质量。它由毛刺大、叠压不齐、装压不紧及变形四种类型构成(图\文www.wxjpby.com/)。
中译英：
Explosion proof motor iron core of good and bad, the whole sets of explosion-proof motor quality plays a crucial role in. The core of poor quality, explosion-proof motor COS to reduce; because the iron losses increase, efficiency to decrease; because of the no-load current, load current increases, the temperature rise can be increased; electromagnetic noise will increase; burr, laminated not neat, the insulation has direct damage, is the bane of winding fault. In order to prevent poor quality for core, insulated vulnerable to injury, factory had to take measures to increase negative -- main insulation thickness, material waste, improves the explosion-proof motor cost, heat is poor, and the rotor core diamond also affects the dynamic balance precision. This is the explosion-proof motor iron core fault hazard. Explosion proof motor iron core fault, strictly speaking, refers to the core manufacturing quality. It consists of burr, laminated not neat, loading is not pressed tightly and deformation of four types.