電工鋼硅鋼片Electrical steel, also known as silicon steel sheet, is an indispensable metal material in the power, electronics, and military industries, and is also the largest functional material in production. It is mainly used as the iron core for various motors, generators, and transformers. Specific total loss (iron loss) is the total power consumed per unit mass of material when the magnetic polarization waveform remains sinusoidal, with a specific peak and frequency. The specific total loss is represented by the symbol P (Jm/f), in W/kg. Example: P1.5/50 represents the specific total loss at a maximum magnetic polarization intensity of 1.5T and a frequency of 50Hz. 3.2 Magnetic Polarization Q/BQB 480-20212 Magnetic polarization intensity refers to the peak magnetic polarization intensity of a specific magnetic field intensity when a sample is subjected to alternating magnetization. Its symbol is J (H), and the unit is T (Tesla). Example: J5000 represents the peak magnetic polarization intensity corresponding to a magnetic field intensity peak of 5000A/m. The material grades in this document are classified based on the nominal maximum specific total loss P1.5/50 (W/kg) at a magnetic polarization strength of 1.5T and a frequency of 50Hz, as well as the nominal thickness of the material. They are further divided into three categories based on product characteristics: ordinary type, stress relief annealing type, and high-efficiency type. Example 1: B35A210 represents a common non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific total loss value P1.5/50 is 2.10W/kg； Example 2: B35AR300 represents a stress relieved annealed non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific total loss value P1.5/50 is 3.00W/kg； Example 3: B35AH230 represents an efficient non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.30W/kg. Example 4: 35WW210 represents a normal type WW non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.10W/kg. Example 5: 35WH230 represents an efficient WH non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.30W/kg. The classification and code of insulation coatings shall comply with the provisions of Table 2. Table 2 Classification and Code of Insulation Coatings Type Code Characteristics of Insulation Coatings Semi organic Thin Coating A Improves Punching Performance and Has Good Weldability Semi organic Thick Coating H has Good Punching Performance and High Interlayer Resistance Semi organic Chromium Free Thin Coating K does not contain chromium and has good weldability Semi organic Chromium Free Thick Coating M does not contain chromium and has good insulation performance Semi organic Chromium Free Extreme Thick Coating J does not contain chromium and has excellent insulation performance Semi organic Chromium Free Ultra Thick Coating L does not contain chromium and has extremely high insulation performance Self adhesive Coating

電工鋼硅鋼片汽車驅(qū)動電機鐵芯的介紹電動汽車是以電驅(qū)動為基礎(chǔ)的、安徽宣城同城經(jīng)濟、安徽宣城同城清潔的綠色交通工具，在能源、安徽宣城同城環(huán)境等方面具有＊的競爭力，而且能夠方便地采用現(xiàn)代控制技術(shù)實現(xiàn)其機電一體化，具有廣闊的發(fā)展前景。汽車驅(qū)動電機鐵芯的電機驅(qū)動系統(tǒng)是電動汽車的動力源，是決定汽車運行各項性能指標的主體與內(nèi)在根據(jù)。目前，電動汽車電機主要有直流電機、安徽宣城同城感應(yīng)電機、安徽宣城同城永磁無刷電機以及開關(guān)磁阻電機等。汽車驅(qū)動電機鐵芯永磁無刷電機可分為兩類：一類是具有正弦波電流的永磁同步電機，另一類是具有矩形脈沖波電流的無刷直流電機。兩種電機，轉(zhuǎn)子都是磁體，電機轉(zhuǎn)子不需要電刷和勵磁繞組，通過定子繞組換相產(chǎn)生旋轉(zhuǎn)轉(zhuǎn)矩。由于轉(zhuǎn)子沒有勵磁繞組，無銅耗，磁通小，在低負荷時鐵耗很小，因此，永磁無刷電機具有高的“功率/質(zhì)量”比，可以高速運轉(zhuǎn)，同時由于沒有轉(zhuǎn)子的磨損且定子繞組是主要的發(fā)熱源，易于冷卻。汽車驅(qū)動電機鐵芯的特性；汽車驅(qū)動電機鐵芯的永磁無刷電機可靠性高，輸出功率大，與相同轉(zhuǎn)速的其他電機相比具有體積小，質(zhì)量輕，便于維修，率，高功率因數(shù)等特點。 轉(zhuǎn)子電磁時間常數(shù)小，電機動態(tài)特性好，通過調(diào)節(jié) 導(dǎo)通角，可以實現(xiàn)恒功率運行，通過優(yōu)化控制 角還可以優(yōu)化電機的效率，從而得到較寬的恒功率運行區(qū)以及較高的效率。電機高速沖定轉(zhuǎn)子鐵芯的概述當(dāng)前國內(nèi)外電機高速沖定轉(zhuǎn)子鐵芯的電機工藝技術(shù)的發(fā)展很快,隨著沖壓設(shè)備的吏新,國內(nèi)外為電機高速沖定轉(zhuǎn)子鐵芯的電機沖片的生產(chǎn)提供了高質(zhì)量、安徽宣城同城率、安徽宣城同城高精度的新型設(shè)備,它帶來了電機沖片工藝技術(shù)為此,與之相適應(yīng)的新工藝裝備的設(shè)計技術(shù)已成為人們研究的新課題。電機高速沖定轉(zhuǎn)子鐵芯的定子沖片沖槽同時分離轉(zhuǎn)子沖片和轉(zhuǎn)子沖片沖槽同時切氣隙是應(yīng)用于高速沖槽機上的新的工藝方案,該方案在國外已被廣泛應(yīng)用,國內(nèi)電機行業(yè)剛開始研究和應(yīng)用,故為實現(xiàn)該工藝按所需工藝裝備的設(shè)計技術(shù)作一些探討。電機高速沖定轉(zhuǎn)子鐵芯的影響：電機高速沖定轉(zhuǎn)子鐵芯的電機沖片工藝技術(shù)在新品開發(fā)中的影響我國電機沖片傳統(tǒng)工藝為復(fù)式?jīng)_槽和單式?jīng)_槽兩大類,現(xiàn)分析如下:1)復(fù)式?jīng)_槽工藝方案:該方案沖片槽形整齊度好,工序少,工裝少,但工裝復(fù)雜精度要求高,設(shè)備條件要好,工裝制造周期長,成本高,只適用于批量生產(chǎn),不利于新品開發(fā)和小批試制。2)單式?jīng)_槽工藝方案:該方案沖片槽形整齊度差,工序多,工裝多,設(shè)備多,工裝較簡單,質(zhì)量不穩(wěn)定,生產(chǎn)周期長,成本高,只適用于中、安徽宣城同城小批生產(chǎn)。電機高速沖定轉(zhuǎn)子鐵芯的要求：1、安徽宣城同城定位精度要求。該工藝方案中沖槽分離和沖槽切氣隙兩道復(fù)合工序,要求同一定位基準,確保定、安徽宣城同城轉(zhuǎn)子槽形,外圓鳩尾槽、安徽宣城同城軸孔的同心度不大于0.02mm,中心孔定位滿足同心度的技術(shù)要求,小側(cè)孔與中心孔聯(lián)合定位滿足周向方位度的要求。2、安徽宣城同城復(fù)合工序精度要求。沖槽分離復(fù)合工序:該工序有槽形凸模和切口凸模來完成級進沖裁工藝,該工序先沖槽后切口分離定、安徽宣城同城轉(zhuǎn)子沖片,兩凸模在同一圓心軌跡上同步動作,兩凸模之間的中心夾角為槽形中心夾角的一倍半,該工藝裝備應(yīng)用在高速沖槽機上,其槽形分度精度由設(shè)備上弧面凸輪式步進機構(gòu)來保證；