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國(guó)內(nèi)關(guān)于石墨電極生產(chǎn)的強(qiáng)度指標(biāo)

標(biāo)簽:石墨電極、中山石墨電極

國(guó)內(nèi)石墨電極生產(chǎn)的強(qiáng)度指標(biāo)主要聚焦于?抗折強(qiáng)度?與?抗壓強(qiáng)度?,具體數(shù)值范圍及影響因素如下:

國(guó)內(nèi)關(guān)于石墨電極生產(chǎn)的強(qiáng)度指標(biāo)

?一、核心強(qiáng)度指標(biāo)解析?

1.抗折強(qiáng)度?

定義?:材料在彎曲載荷下抵抗斷裂的能力,反映機(jī)械強(qiáng)度與韌性。

數(shù)值范圍?:

-普通功率石墨電極(RP)?:≥8.5 MPa(如300 mm RP電極)。

-高功率石墨電極(HP)?:≥35 MPa(如400 mm HP電極)。

-超高功率石墨電極(UHP)?:≥37 MPa(如Φ400mm UHP電極),部分高層產(chǎn)品可達(dá)40-51 MPa(如中鋼石墨SL810電極)。

測(cè)試方法?:采用三點(diǎn)彎曲法或四點(diǎn)彎曲法(參考GB/T 3074.1-2021)。


2.抗壓強(qiáng)度?

定義?:材料在壓縮載荷下抵抗破壞的能力,反映抗變形與抗破裂性能。

數(shù)值范圍?:

普通電極?:未明確公開數(shù)據(jù),但通常低于高功率電極。

高層電極?:如中鋼石墨SL810電極達(dá)115 MPa。

測(cè)試方法?:利用液壓試驗(yàn)機(jī)加載至斷裂(參考GB/T 1431-2019)。


?二、強(qiáng)度指標(biāo)的影響因素?

1.原料選擇?

針狀焦?:優(yōu)質(zhì)針狀焦可提升電極強(qiáng)度(如UHP電極需高級(jí)別針狀焦)。

石油焦?:普通石油焦用于RP電極,強(qiáng)度較低。

灰分含量?:灰分≤50 ppm可減少雜質(zhì)對(duì)強(qiáng)度的負(fù)面影響(如河南六工石墨將灰分降至30 ppm以下)。


2.制造工藝?

成型壓力?:高壓成型可減少孔隙率,提升密度與強(qiáng)度。

焙燒溫度?:高溫焙燒(如2500-3000℃)促進(jìn)石墨化,增強(qiáng)結(jié)構(gòu)致密性。

浸漬次數(shù)?:重復(fù)浸漬(2-3次)可填補(bǔ)孔隙,提高體積密度與強(qiáng)度。


3.規(guī)格尺寸?

小規(guī)格電極?:通常比大規(guī)格電極具有更高強(qiáng)度(如400 mm HP電極抗折強(qiáng)度≥35 MPa,而600 mm UHP電極可能略低)。


?三、行業(yè)標(biāo)志案例?

1.方大炭素?

產(chǎn)品?:600 mm UHP電極,體積密度1.75 g/cm3,彈性模量≤12 GPa,熱膨脹系數(shù)≤1.0×10??/℃。

強(qiáng)度表現(xiàn)?:抗折強(qiáng)度未直接標(biāo)注,但體積密度與彈性模量指標(biāo)暗示其強(qiáng)度優(yōu)于普通電極。


2.中鋼石墨SL810?

抗折強(qiáng)度?:51 MPa(遠(yuǎn)超普通UHP電極標(biāo)準(zhǔn))。

抗壓強(qiáng)度?:115 MPa。

應(yīng)用場(chǎng)景?:電爐冶煉行業(yè),適合高溫高壓環(huán)境。


3.河北晶碳科技?

產(chǎn)品?:EDM電極,加工精度±5 μm,表面粗糙度Ra≤0.5 μm。

強(qiáng)度關(guān)聯(lián)?:高精度加工需材料具備足夠強(qiáng)度以避免加工裂紋。


?四、行業(yè)趨勢(shì)與建議?

1.高層化轉(zhuǎn)型?:隨著電爐煉鋼普及率提升(2025年達(dá)20%),超高功率電極需求增長(zhǎng),企業(yè)需通過優(yōu)化原料與工藝提升強(qiáng)度指標(biāo)。

2.智能化檢測(cè)?:AI數(shù)字孿生系統(tǒng)可動(dòng)態(tài)仿真工藝參數(shù),預(yù)測(cè)加工缺陷,提升強(qiáng)度一致性(如河南六工石墨采用該技術(shù)降低電極損耗率至銅電極1/3)。

3.環(huán)保化要求?:歐盟碳關(guān)稅推動(dòng)全流程碳排放≤1.2 kg/kg,企業(yè)需采用石墨化尾氣回收技術(shù)(如回收90%粉塵)以兼顧強(qiáng)度與環(huán)保。


?總結(jié)?:國(guó)內(nèi)石墨電極生產(chǎn)強(qiáng)度指標(biāo)以抗折強(qiáng)度(8.5-51 MPa)與抗壓強(qiáng)度(未公開至115 MPa)為核心,受原料、工藝、規(guī)格等因素影響顯著。企業(yè)可通過選用優(yōu)質(zhì)針狀焦、優(yōu)化焙燒工藝、控制灰分含量等手段提升強(qiáng)度,并借助智能化檢測(cè)技術(shù)實(shí)現(xiàn)高層化轉(zhuǎn)型。               http://m.mfsiliao.com/

石墨制品加工2

石墨制品加工2

石墨電極特點(diǎn):
1.重量輕:比重是銅的1/5,適合制作大型電極。
2.放電加工速度快:放電加工速度比銅快3~5倍,大面積或粗加工時(shí)更明顯。
3.耐高溫:溫度達(dá)3650℃時(shí)升華氣化,能承受更大的電流。
4.表面易于處理:機(jī)加工后無毛刺,易于手工處理。
5.熱膨脹系數(shù)低:為銅的1/4,且受熱不變形。
6.?機(jī)加工性能好:切削阻力為銅的1/3。
7.電極損耗小:與銅的比率為2:4,可以無損加工。

石墨制品加工
中山市小欖鎮(zhèn)永鈦模具加工店 ? 2022 版權(quán)所有    粵ICP備2023000285號(hào)    網(wǎng)站地圖    網(wǎng)站管理
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中山市小欖鎮(zhèn)永鈦模具加工店提供石墨制品加工石墨電極石墨零件和中山石墨電極,中山石墨加工廠,中山石墨電極加工廠,江門石墨電極,江門石墨加工廠,江門石墨電極加工廠,珠海石墨電極,珠海石墨加工廠,珠海石墨電極加工廠,東莞石墨電極,佛山石墨電極,石墨加工廠,石墨電極加工廠。本站網(wǎng)址:http://m.mfsiliao.com
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