三、交流電機的優(yōu)點
1.交流電機 制造比較便宜。
2.矢量變頻技術的發(fā)展,已經(jīng)可以用變頻電機模擬成直流電
3.相對于直流電機在結構簡單、維護容易、對環(huán)境要求低以及節(jié)能和提高生產(chǎn)力等方面具有足夠的優(yōu)勢,使得交流調(diào)速已經(jīng)廣泛運用于工農(nóng)業(yè)生產(chǎn)、交通運輸、國防以及日常生活之中。
四、交流電機的缺點
1.交流電機的啟動性和調(diào)速性較差
交流電機根據(jù)轉速可分為同步電機和異步電機。
新聞:馬山縣打靶機專用步進電機ML23HSCP4200產(chǎn)品
在生產(chǎn)機械中廣泛使用不改變同步轉速的調(diào)速方法有繞線式電動機的轉子串電阻調(diào)速、斬波調(diào)速、串級調(diào)速以及應用電磁轉差離合器、液力偶合器、油膜離合器等調(diào)速。改變同步轉速的有改變定子極對數(shù)的多速電動機,改變定子電壓、頻率的變頻調(diào)速有能無換向電動機調(diào)速等。
從調(diào)速時的能耗觀點來看,有調(diào)速方法與低效調(diào)速方法兩種:調(diào)速指時轉差率不變,因此無轉差損耗,如多速電動機、變頻調(diào)速以及能將轉差損耗回收的調(diào)速方法(如串級調(diào)速等)。有轉差損耗的調(diào)速方法屬低效調(diào)速,如轉子串電阻調(diào)速方法,能量就損耗在轉子回路中;電磁離合器的調(diào)速方法,能量損耗在離合器線圈中;液力偶合器調(diào)速,能量損耗在液力偶合器的油中。一般來說轉差損耗隨調(diào)速范圍擴大而增加,假如調(diào)速范圍不大,能量損耗是很小的。
新聞:馬山縣打靶機專用步進電機ML23HSCP4200產(chǎn)品
一般場所應選用II類手持式電動工具并應裝設額定觸電動作電流不大于15mA,額定動作時間小于.1s的漏電保護器。若采用I類手持式電動工具,還必須作接零保護。操作人員必須戴絕緣手套、穿絕緣鞋或站在絕緣墊上。在潮濕場所或金屬構架上操作時,必須選用II類手持式電動工具,并裝設防濺的漏電保護器。嚴禁使用I類手持電動工具。狹窄場所(鍋爐、金屬容器、地溝、管道內(nèi)等)宜選用帶隔離變壓器的III類手持式電動工具;若選用II類手持式電動工具,必須裝設防濺的漏電保護器。
新聞:馬山縣打靶機專用步進電機ML23HSCP4200產(chǎn)品
GONGJI減速電機KOKI減速電機
M3A404
TKAR70-R 20:1
TKAR80-12 TKAR60 TKAR50
M3A404
TKAR80-12
TKAR70-R TKAE80 1:40
TKAR70-R 20:1
TKAR135 TKAR100 TKAR120
BHLQM100-15AR-18IL
BHLQM100-15AL-18IL
BHLQM100 I=15AR
BHLQM100-15AL
BHOF120-10L MKWEQM50-ANL 800:1
AKGQ40 20:1
BHF120-10L AKGQ40 40:1
TKB120 20:I TKB135 40:1 TKB70-30
TKVWEQ120-R 800:1
TKVWEQ100-R 800:1
G328 100:1 0.2KW M3A402
M3A402 SV022 100:1 90:1
M3A404
TKB80 1:60
TKB60-L 30:1
M3B405 0.55KW SV22 7:1 8:1
M3B402 0.18KW 0.2KW SV18 1:20
TKB60-30R TKB50-10L TKB80 1:40R TKB80-R
M3B402 TKA60 1/60
AKEQH50
TKA60 TKV60 TKV80 TKB70-L AKEQM63-10
SHSM02182Z1A4 SVB18 1:20
TKVWEQ80-R 600:1 M3A404
B:出料成型情況反饋除了要有擠壓模具號碼標識清楚的料頭之外,還要在料頭上標識料頭難以看出來的整體流向情況,如相交出料(表示在實際擠壓過程中是兩孔內(nèi)側慢外側快引起);相離出料(表示在實際擠壓過程中是兩孔內(nèi)側快外側慢引起);左長右短表示左支長右支短,并且要注明長短相差的量,因為中斷鋸到出料口的距離大約6米,所以通常A米/6米的形式表示長短相差的分量為每6米就相差A米,這樣完善準確的表達才有利于修模人員的正確判斷和維修。
新聞:馬山縣打靶機專用步進電機ML23HSCP4200產(chǎn)品
CH3700-3-S-G4-DL-H3
CH3700-5-S-G4-DL-H3
CH3700-10-S-G4-DL-H3
CH3700-15-S-G4-DL-H3
CH3700-20-S-G4-DL-H3
CH3700-25-S-G4-DL-H3
CH3700-30-S-G4-DL-H3
CH3700-40-S-G4-DL-H3
CH3700-45-S-G4-DL-H3
CH3700-50-S-G4-DL-H3
CH3700-60-S-G4-DL-H3
CH3700-70-S-G4-DL-H3
CH3700-80-S-G4-DL-H3
CH3700-90-S-G4-DL-H3
CH3700-100-S-G4-DL-H3
CH3700-120-S-G4-DL-H3
CH3700-140-S-G4-DL-H3
CH3700-160-S-G4-DL-H3
CH3700-180-S-G4-DL-H3
CH3700-200-S-G4-DL-H3
CH100-3-S-B-G4-DL-H3
CH100-5-S-B-G4-DL-H3
CH100-10-S-B-G4-DL-H3
CH100-15-S-B-G4-DL-H3
CH100-20-S-B-G4-DL-H3
CH100-25-S-B-G4-DL-H3
CH100-30-S-B-G4-DL-H3
CH100-40-S-B-G4-DL-H3
CH100-45-S-B-G4-DL-H3
CH100-50-S-B-G4-DL-H3
CH100-60-S-B-G4-DL-H3
CH100-70-S-B-G4-DL-H3
CH100-80-S-B-G4-DL-H3
CH100-90-S-B-G4-DL-H3
CH100-100-S-B-G4-DL-H3
CH100-120-S-B-G4-DL-H3
CH100-140-S-B-G4-DL-H3
CH100-160-S-B-G4-DL-H3
CH100-180-S-B-G4-DL-H3
CH100-200-S-B-G4-DL-H3
CH200-3-S-B-G4-DL-H3
CH200-5-S-B-G4-DL-H3
CH200-10-S-B-G4-DL-H3
CH200-15-S-B-G4-DL-H3
CH200-20-S-B-G4-DL-H3
CH200-25-S-B-G4-DL-H3
CH200-30-S-B-G4-DL-H3
CH200-40-S-B-G4-DL-H3
CH200-45-S-B-G4-DL-H3
CH200-50-S-B-G4-DL-H3
CH200-60-S-B-G4-DL-H3
CH200-70-S-B-G4-DL-H3
CH200-80-S-B-G4-DL-H3
CH200-90-S-B-G4-DL-H3
CH200-100-S-B-G4-DL-H3
CH200-120-S-B-G4-DL-H3
CH200-140-S-B-G4-DL-H3
CH200-160-S-B-G4-DL-H3
CH200-180-S-B-G4-DL-H3
CH200-200-S-B-G4-DL-H3