大小(xiao)头大端(duan)面(mian)(mian)截(jie)面(mian)(mian)承受扭(niu)(niu)矩(ju)时的(de)(de)(de)极限扭(niu)(niu)矩(ju)相对要比小(xiao)端(duan)面(mian)(mian)截(jie)面(mian)(mian)承受扭(niu)(niu)矩(ju)时的(de)(de)(de)极限扭(niu)(niu)矩(ju)小(xiao)。在大小(xiao)头承受端(duan)面(mian)(mian)扭(niu)(niu)矩(ju)作(zuo)用(yong)(yong)(yong)上(shang),还提出(chu)了(le)一(yi)端(duan)的(de)(de)(de)扭(niu)(niu)矩(ju)无(wu)法(fa)完全(quan)传(chuan)递到另一(yi)端(duan)的(de)(de)(de)概念,扭(niu)(niu)矩(ju)在传(chuan)递中会逐渐转化为(wei)(wei)弯矩(ju)。a.缩径(jing)(jing)(jing)(jing)/扩径(jing)(jing)(jing)(jing)成(cheng)形(xing)(xing)(xing):异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)的(de)(de)(de)缩径(jing)(jing)(jing)(jing)成(cheng)形(xing)(xing)(xing)工艺(yi)是(shi)(shi)将(jiang)与(yu)(yu)异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)大端(duan)直径(jing)(jing)(jing)(jing)相等的(de)(de)(de)管(guan)(guan)坯放入成(cheng)形(xing)(xing)(xing)模中，通过(guo)沿(yan)管(guan)(guan)坯轴向(xiang)方向(xiang)的(de)(de)(de)压(ya)(ya)(ya)制(zhi)，使(shi)金(jin)属沿(yan)模腔(qiang)运(yun)动并收缩成(cheng)形(xing)(xing)(xing)。根据(ju)异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)变径(jing)(jing)(jing)(jing)的(de)(de)(de)大小(xiao)，分为(wei)(wei)一(yi)次压(ya)(ya)(ya)制(zhi)成(cheng)形(xing)(xing)(xing)或(huo)(huo)多次压(ya)(ya)(ya)制(zhi)成(cheng)形(xing)(xing)(xing)。b.冲压(ya)(ya)(ya)成(cheng)形(xing)(xing)(xing):除使(shi)用(yong)(yong)(yong)钢(gang)管(guan)(guan)为(wei)(wei)原(yuan)料生(sheng)产(chan)异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)外，对部(bu)分规格(ge)的(de)(de)(de)异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)还可用(yong)(yong)(yong)钢(gang)板(ban)采用(yong)(yong)(yong)冲压(ya)(ya)(ya)成(cheng)形(xing)(xing)(xing)工艺(yi)进行(xing)生(sheng)产(chan)。拉伸(shen)所使(shi)用(yong)(yong)(yong)的(de)(de)(de)冲模形(xing)(xing)(xing)状参照异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)内表(biao)面(mian)(mian)尺寸设(she)计，用(yong)(yong)(yong)冲模将(jiang)下料后的(de)(de)(de)钢(gang)板(ban)冲压(ya)(ya)(ya)拉伸(shen)成(cheng)形(xing)(xing)(xing)。同(tong)心异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)是(shi)(shi)钢(gang)制(zhi)热压(ya)(ya)(ya)成(cheng)型或(huo)(huo)者锻(duan)打成(cheng)型的(de)(de)(de)异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)，它(ta)的(de)(de)(de)连接形(xing)(xing)(xing)式就是(shi)(shi)直接将(jiang)异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)与(yu)(yu)钢(gang)管(guan)(guan)对焊，同(tong)心异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)的(de)(de)(de)主(zhu)要制(zhi)造标准一(yi)般是(shi)(shi)GB/T12459、GB/T13401、ASME、SH3408、SH3409、HG/T21635、HG/T21631、SY/T0510。与(yu)(yu)同(tong)心异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)对应的(de)(de)(de)还有(you)偏心异(yi)(yi)(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)，材(cai)料有(you)碳钢(gang)，合金(jin)钢(gang)和(he)不(bu)(bu)锈(xiu)钢(gang)。大小(xiao)头。温(wen)州伟诚(cheng)管(guan)(guan)件有(you)限公(gong)司(si)是(shi)(shi)一(yi)家专业(ye)提供碳素钢(gang)大小(xiao)头设(she)备(bei)的(de)(de)(de)公(gong)司(si)，有(you)想法(fa)的(de)(de)(de)不(bu)(bu)要错(cuo)过(guo)哦！山东(dong)304大小(xiao)头市场价

不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)食(shi)品(pin)级同心偏心异(yi)径(jing)(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)又(you)称大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)、异(yi)径(jing)(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)、异(yi)径(jing)(jing)(jing)(jing)(jing)直(zhi)通(tong)(tong)。化(hua)工(gong)管(guan)(guan)(guan)(guan)(guan)件之一(yi)，用(yong)于两种(zhong)不同管(guan)(guan)(guan)(guan)(guan)径(jing)(jing)(jing)(jing)(jing)的(de)(de)管(guan)(guan)(guan)(guan)(guan)道(dao)之间的(de)(de)连接。按照(zhao)(zhao)形(xing)(xing)(xing)(xing)状的(de)(de)不同，分(fen)为(wei)同心大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)和偏心大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)两种(zhong)。大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)（异(yi)径(jing)(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)）是(shi)用(yong)于管(guan)(guan)(guan)(guan)(guan)道(dao)口(kou)径(jing)(jing)(jing)(jing)(jing)的(de)(de)一(yi)种(zhong)管(guan)(guan)(guan)(guan)(guan)件。通(tong)(tong)常(chang)采(cai)用(yong)的(de)(de)成(cheng)(cheng)形(xing)(xing)(xing)(xing)工(gong)艺为(wei)缩(suo)径(jing)(jing)(jing)(jing)(jing)压(ya)(ya)制、扩径(jing)(jing)(jing)(jing)(jing)压(ya)(ya)制或缩(suo)径(jing)(jing)(jing)(jing)(jing)加扩径(jing)(jing)(jing)(jing)(jing)压(ya)(ya)制，对某些规(gui)格(ge)的(de)(de)异(yi)径(jing)(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)也可(ke)采(cai)用(yong)冲(chong)(chong)压(ya)(ya)成(cheng)(cheng)形(xing)(xing)(xing)(xing)。缩(suo)径(jing)(jing)(jing)(jing)(jing)/扩径(jing)(jing)(jing)(jing)(jing)成(cheng)(cheng)形(xing)(xing)(xing)(xing)大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)的(de)(de)缩(suo)径(jing)(jing)(jing)(jing)(jing)成(cheng)(cheng)形(xing)(xing)(xing)(xing)工(gong)艺是(shi)将(jiang)与大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)大(da)(da)(da)(da)(da)端直(zhi)径(jing)(jing)(jing)(jing)(jing)相(xiang)等的(de)(de)管(guan)(guan)(guan)(guan)(guan)坯放(fang)入(ru)成(cheng)(cheng)形(xing)(xing)(xing)(xing)模(mo)中，通(tong)(tong)过沿(yan)管(guan)(guan)(guan)(guan)(guan)坯轴向方(fang)(fang)向的(de)(de)压(ya)(ya)制，使金属沿(yan)模(mo)腔运动并收缩(suo)成(cheng)(cheng)形(xing)(xing)(xing)(xing)。根据异(yi)径(jing)(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)变径(jing)(jing)(jing)(jing)(jing)的(de)(de)大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)，分(fen)为(wei)一(yi)次压(ya)(ya)制成(cheng)(cheng)形(xing)(xing)(xing)(xing)或多次压(ya)(ya)制成(cheng)(cheng)形(xing)(xing)(xing)(xing)。冲(chong)(chong)压(ya)(ya)成(cheng)(cheng)形(xing)(xing)(xing)(xing)除使用(yong)钢(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)为(wei)原料生产大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)外，对部分(fen)规(gui)格(ge)的(de)(de)大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)还可(ke)用(yong)钢(gang)(gang)(gang)板(ban)采(cai)用(yong)冲(chong)(chong)压(ya)(ya)成(cheng)(cheng)形(xing)(xing)(xing)(xing)工(gong)艺进(jin)行(xing)生产。拉伸(shen)(shen)所(suo)使用(yong)的(de)(de)冲(chong)(chong)模(mo)形(xing)(xing)(xing)(xing)状参照(zhao)(zhao)大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)内表(biao)面尺寸设计，用(yong)冲(chong)(chong)模(mo)将(jiang)下料后的(de)(de)钢(gang)(gang)(gang)板(ban)冲(chong)(chong)压(ya)(ya)拉伸(shen)(shen)成(cheng)(cheng)形(xing)(xing)(xing)(xing)常(chang)备产品(pin)规(gui)格(ge)(特殊规(gui)格(ge)可(ke)按客户要(yao)求定制)1.不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)圆管(guan)(guan)(guan)(guan)(guan)：Φ6-Φ323(mm)厚(hou)度(du)：(mm)2.不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)水管(guan)(guan)(guan)(guan)(guan)：Φ×—Φ325×（mm）；DN15—DN300;4分(fen)—12寸3.不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)卫生管(guan)(guan)(guan)(guan)(guan)：Φ×—Φ219×（mm）4.不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)工(gong)业(ye)流体管(guan)(guan)(guan)(guan)(guan)：Φ×—×5.不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)方(fang)(fang)管(guan)(guan)(guan)(guan)(guan)：8*8—280*280(mm)厚(hou)度(du)：(mm)6.不锈(xiu)(xiu)(xiu)钢(gang)(gang)(gang)矩管(guan)(guan)(guan)(guan)(guan)：20*10—100*200(mm)厚(hou)度(du)：。福建异(yi)径(jing)(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)品(pin)牌(pai)温(wen)州伟诚管(guan)(guan)(guan)(guan)(guan)件有(you)限公司(si)是(shi)一(yi)家专业(ye)提供碳素钢(gang)(gang)(gang)大(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)设备的(de)(de)公司(si)，期(qi)待您的(de)(de)光临！

不(bu)会形(xing)(xing)(xing)(xing)成(cheng)气阻.在(zai)(zai)异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)形(xing)(xing)(xing)(xing)成(cheng)前(qian)，应对原(yuan)材(cai)料(liao)表面(mian)进(jin)(jin)行检查(cha)，并(bing)将表面(mian)缺陷(xian)清(qing)理干净。原(yuan)材(cai)料(liao)的(de)(de)(de)(de)内在(zai)(zai)质(zhi)量(liang)通(tong)常是无(wu)(wu)法明确显示的(de)(de)(de)(de)，如(ru)材(cai)料(liao)内部的(de)(de)(de)(de)裂纹、夹渣，疏松(song)、气孔等(deng)缺陷(xian)，要(yao)通(tong)过(guo)诸如(ru)无(wu)(wu)损检测(ce)等(deng)方(fang)法才能检测(ce)到，或(huo)(huo)(huo)者(zhe)在(zai)(zai)形(xing)(xing)(xing)(xing)成(cheng)过(guo)程中暴露(lu)出来。所以(yi)制(zhi)造异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)原(yuan)材(cai)料(liao)一般(ban)应经过(guo)如(ru)水压(ya)实验(yan)、涡流检查(cha)、超(chao)声波检测(ce)等(deng)。高压(ya)异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)或(huo)(huo)(huo)用(yong)于(yu)由(you)工艺特殊要(yao)求的(de)(de)(de)(de)异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)，通(tong)常制(zhi)造商应对原(yuan)材(cai)料(liao)或(huo)(huo)(huo)形(xing)(xing)(xing)(xing)成(cheng)后的(de)(de)(de)(de)产品(pin)进(jin)(jin)行超(chao)声波检测(ce)或(huo)(huo)(huo)其(qi)他附加(jia)检测(ce)，如(ru)金(jin)相检测(ce)等(deng)以(yi)保证材(cai)料(liao)的(de)(de)(de)(de)内部质(zhi)量(liang)满(man)足规(gui)定。同心(xin)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)同心(xin)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)厂educer又称大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou).异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan).异(yi)(yi)径(jing)(jing)(jing)(jing)直(zhi)通(tong).化(hua)(hua)工管(guan)(guan)(guan)(guan)件(jian)之(zhi)一.用(yong)于(yu)两(liang)种(zhong)(zhong)不(bu)同管(guan)(guan)(guan)(guan)径(jing)(jing)(jing)(jing)的(de)(de)(de)(de)管(guan)(guan)(guan)(guan)道之(zhi)间的(de)(de)(de)(de)连(lian)接.按照(zhao)形(xing)(xing)(xing)(xing)状的(de)(de)(de)(de)不(bu)同.分(fen)为(wei)同心(xin)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)和偏心(xin)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)两(liang)种(zhong)(zhong).大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)材(cai)质(zhi)包括不(bu)锈钢(gang)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)(合(he)金(jin)钢(gang).碳(tan)钢(gang)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou).大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)的(de)(de)(de)(de)材(cai)质(zhi)有20号钢(gang).(异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan))是用(yong)于(yu)管(guan)(guan)(guan)(guan)道口径(jing)(jing)(jing)(jing)的(de)(de)(de)(de)一种(zhong)(zhong)管(guan)(guan)(guan)(guan)件(jian).通(tong)常采用(yong)的(de)(de)(de)(de)成(cheng)形(xing)(xing)(xing)(xing)工艺为(wei)缩径(jing)(jing)(jing)(jing)压(ya)制(zhi).扩径(jing)(jing)(jing)(jing)压(ya)制(zhi)或(huo)(huo)(huo)缩径(jing)(jing)(jing)(jing)加(jia)扩径(jing)(jing)(jing)(jing)压(ya)制(zhi).对某些规(gui)格的(de)(de)(de)(de)异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)也可采用(yong)冲压(ya)成(cheng)形(xing)(xing)(xing)(xing).大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)又称大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)、异(yi)(yi)径(jing)(jing)(jing)(jing)管(guan)(guan)(guan)(guan)、异(yi)(yi)径(jing)(jing)(jing)(jing)直(zhi)通(tong)。化(hua)(hua)工管(guan)(guan)(guan)(guan)件(jian)之(zhi)一，用(yong)于(yu)两(liang)种(zhong)(zhong)不(bu)同管(guan)(guan)(guan)(guan)径(jing)(jing)(jing)(jing)的(de)(de)(de)(de)连(lian)接。又分(fen)为(wei)同心(xin)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)和偏心(xin)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)两(liang)种(zhong)(zhong)。大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)材(cai)质(zhi)包括不(bu)锈钢(gang)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)，合(he)金(jin)钢(gang)，碳(tan)钢(gang)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)，大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)的(de)(de)(de)(de)材(cai)质(zhi)有20号钢(gang)、等(deng)。大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)(tou)标(biao)准：国标(biao)美标(biao)英标(biao)以(yi)及各种(zhong)(zhong)非标(biao)产品(pin)。

  大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)放(fang)(fang)样(yang)就(jiu)是(shi)指(zhi)大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)的(de)(de)(de)(de)平(ping)面展开(kai)图(tu)。   大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)放(fang)(fang)样(yang)需标注的(de)(de)(de)(de)四(si)个条(tiao)(tiao)件(jian)：大(da)(da)头(tou)(tou)(tou)(tou)(tou)直(zhi)(zhi)(zhi)(zhi)径(jing)、小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)直(zhi)(zhi)(zhi)(zhi)径(jing)、板厚以(yi)(yi)及垂(chui)直(zhi)(zhi)(zhi)(zhi)高(gao)度(du)。   大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)放(fang)(fang)样(yang)步(bu)骤(zhou)如下：   1、纵(zong)向画(hua)一条(tiao)(tiao)垂(chui)直(zhi)(zhi)(zhi)(zhi)直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L1，在线(xian)(xian)(xian)的(de)(de)(de)(de)下方(fang)段标记点(dian)A，然后(hou)画(hua)一条(tiao)(tiao)垂(chui)直(zhi)(zhi)(zhi)(zhi)于直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L1并相交(jiao)(jiao)于A点(dian)的(de)(de)(de)(de)相交(jiao)(jiao)线(xian)(xian)(xian)L2。根(gen)据(ju)(ju)大(da)(da)头(tou)(tou)(tou)(tou)(tou)的(de)(de)(de)(de)半(ban)径(jing)，在相交(jiao)(jiao)线(xian)(xian)(xian)上标记出(chu)大(da)(da)头(tou)(tou)(tou)(tou)(tou)半(ban)径(jing)的(de)(de)(de)(de)长(zhang)(zhang)，以(yi)(yi)A为起(qi)点(dian)向右(you)截取点(dian)B，AB长(zhang)(zhang)即为大(da)(da)头(tou)(tou)(tou)(tou)(tou)半(ban)径(jing)。   2、根(gen)据(ju)(ju)大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)的(de)(de)(de)(de)高(gao)度(du)，以(yi)(yi)点(dian)A为起(qi)点(dian)，在直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L1上往(wang)(wang)上截取一段标记点(dian)C，AC长(zhang)(zhang)即为高(gao)度(du)。然后(hou)画(hua)一条(tiao)(tiao)与直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L1垂(chui)直(zhi)(zhi)(zhi)(zhi)的(de)(de)(de)(de)相交(jiao)(jiao)线(xian)(xian)(xian)L3，交(jiao)(jiao)于点(dian)C。量取小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)半(ban)径(jing)，以(yi)(yi)点(dian)C为起(qi)点(dian)，在直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L3上往(wang)(wang)右(you)截取点(dian)D，CD长(zhang)(zhang)即为小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)半(ban)径(jing)。   3、连接(jie)B、D两点(dian)的(de)(de)(de)(de)直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L4与直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L1相交(jiao)(jiao)于点(dian)E。   4、以(yi)(yi)点(dian)E为圆(yuan)(yuan)心，EB为半(ban)径(jing)，从点(dian)B开(kai)始画(hua)出(chu)圆(yuan)(yuan)弧(hu)，根(gen)据(ju)(ju)圆(yuan)(yuan)弧(hu)的(de)(de)(de)(de)计算(suan)公(gong)式算(suan)出(chu)大(da)(da)头(tou)(tou)(tou)(tou)(tou)周长(zhang)(zhang)，然后(hou)在圆(yuan)(yuan)弧(hu)上取点(dian)F，弧(hu)BF就(jiu)是(shi)大(da)(da)头(tou)(tou)(tou)(tou)(tou)周长(zhang)(zhang)。   5、再(zai)次(ci)以(yi)(yi)点(dian)E为圆(yuan)(yuan)心，ED为半(ban)径(jing)，从点(dian)D开(kai)始画(hua)出(chu)圆(yuan)(yuan)弧(hu)，根(gen)据(ju)(ju)圆(yuan)(yuan)弧(hu)的(de)(de)(de)(de)计算(suan)公(gong)式算(suan)出(chu)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)周长(zhang)(zhang)，然后(hou)在圆(yuan)(yuan)弧(hu)上取点(dian)G，弧(hu)DG就(jiu)是(shi)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)周长(zhang)(zhang)。   6、连接(jie)F、G两点(dian)，交(jiao)(jiao)于直(zhi)(zhi)(zhi)(zhi)线(xian)(xian)(xian)L1，交(jiao)(jiao)点(dian)为点(dian)E。   7、根(gen)据(ju)(ju)以(yi)(yi)上步(bu)骤(zhou)画(hua)出(chu)的(de)(de)(de)(de)图(tu)样(yang)就(jiu)是(shi)大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)的(de)(de)(de)(de)平(ping)面展开(kai)图(tu)。温州伟诚管件(jian)有限公(gong)司是(shi)一家专业提供碳素钢大(da)(da)小(xiao)(xiao)(xiao)头(tou)(tou)(tou)(tou)(tou)设备的(de)(de)(de)(de)公(gong)司，有想法的(de)(de)(de)(de)可以(yi)(yi)来电咨询(xun)！

温(wen)州伟诚管(guan)件有限公(gong)司大(da)小(xiao)头(tou)(tou)(tou)使用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)方(fang)法讲解。国标冲(chong)(chong)(chong)压(ya)(ya)弯(wan)(wan)(wan)头(tou)(tou)(tou)管(guan)材其特点(dian)耐温(wen)耐压(ya)(ya)柔(rou)韧性好耐热(re)，其性能高(gao)(gao)于其它塑料管(guan)材。冲(chong)(chong)(chong)压(ya)(ya)焊接(jie)(jie)(jie)弯(wan)(wan)(wan)头(tou)(tou)(tou)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)于连接(jie)(jie)(jie)两根公(gong)称通径(jing)相同的(de)(de)(de)(de)管(guan)子，使管(guan)路作度转弯(wan)(wan)(wan)。这种连接(jie)(jie)(jie)方(fang)法既大(da)小(xiao)头(tou)(tou)(tou)方(fang)便又十分牢固，解决(jue)了(le)连接(jie)(jie)(jie)中(zhong)(zhong)许多常见的(de)(de)(de)(de)问(wen)题，整体法兰它的(de)(de)(de)(de)优点(dian)主(zhu)(zhu)要(yao)表现在(zai)以(yi)下几个(ge)方(fang)面：没有垫(dian)圈(quan)，完全靠管(guan)材的(de)(de)(de)(de)自身压(ya)(ya)缩以(yi)达到密封的(de)(de)(de)(de)目的(de)(de)(de)(de)，漏(lou)水的(de)(de)(de)(de)概率实际上(shang)为(wei)(wei)零，避免了(le)因垫(dian)圈(quan)破损老化(hua)所(suo)引(yin)起(qi)的(de)(de)(de)(de)漏(lou)水隐患(huan)。弯(wan)(wan)(wan)头(tou)(tou)(tou)的(de)(de)(de)(de)工期可以(yi)提冲(chong)(chong)(chong)压(ya)(ya)弯(wan)(wan)(wan)头(tou)(tou)(tou)前，生产出(chu)来就可以(yi)装车走人。在(zai)各大(da)行业(ye)中(zhong)(zhong)的(de)(de)(de)(de)重要(yao)应用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)冶(ye)金电(dian)力行业(ye)中(zhong)(zhong)的(de)(de)(de)(de)应用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)冶(ye)金电(dian)力行业(ye)输送煤粉(fen)灰渣泥浆(jiang)(jiang)石灰石膏浆(jiang)(jiang)液等每年需要(yao)消耗大(da)量的(de)(de)(de)(de)金属管(guan)道。平焊法兰的(de)(de)(de)(de)刚(gang)性较差，承插四通适用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)于压(ya)(ya)力的(de)(de)(de)(de)场合：对焊法兰又称高(gao)(gao)颈弯(wan)(wan)(wan)头(tou)(tou)(tou)法兰，刚(gang)性较大(da)，适用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)于压(ya)(ya)力温(wen)度较高(gao)(gao)的(de)(de)(de)(de)场合。主(zhu)(zhu)要(yao)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)于工程及大(da)型设(she)备上(shang)输送流体管(guan)道。冲(chong)(chong)(chong)压(ya)(ya)弯(wan)(wan)(wan)头(tou)(tou)(tou)制(zhi)作工艺的(de)(de)(de)(de)优点(dian)的(de)(de)(de)(de)表现星阔弯(wan)(wan)(wan)头(tou)(tou)(tou)，冲(chong)(chong)(chong)压(ya)(ya)弯(wan)(wan)(wan)头(tou)(tou)(tou)的(de)(de)(de)(de)制(zhi)作工艺先焊接(jie)(jie)(jie)一个(ge)横截面为(wei)(wei)多边(bian)形(xing)的(de)(de)(de)(de)多棱环壳或两端封闭的(de)(de)(de)(de)多棱扇形(xing)壳，内(nei)部冲(chong)(chong)(chong)满(man)压(ya)(ya)力介(jie)质后，施以(yi)内(nei)压(ya)(ya)，在(zai)内(nei)压(ya)(ya)作用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)下横截面由(you)多边(bian)形(xing)逐渐变成圆，终成为(wei)(wei)一个(ge)圆形(xing)环壳。热(re)压(ya)(ya)大(da)小(xiao)头(tou)(tou)(tou)大(da)小(xiao)头(tou)(tou)(tou)（异(yi)径(jing)管(guan)）是用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)于管(guan)道口(kou)径(jing)的(de)(de)(de)(de)一种管(guan)件。通常采用(yong)(yong)(yong)(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)成形(xing)工艺为(wei)(wei)缩径(jing)压(ya)(ya)制(zhi)、扩径(jing)压(ya)(ya)制(zhi)或缩径(jing)加(jia)扩径(jing)压(ya)(ya)制(zhi)。碳素(su)钢(gang)大(da)小(xiao)头(tou)(tou)(tou)设(she)备，就选温(wen)州伟诚管(guan)件有限公(gong)司，让您满(man)意，欢迎您的(de)(de)(de)(de)来电(dian)哦！甘肃304L大(da)小(xiao)头(tou)(tou)(tou)贵吗

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温州伟(wei)诚(cheng)管(guan)(guan)(guan)件有限公司(si)：规格(ge)齐(qi)全品质(zhi)保证异径(jing)(jing)(jing)管(guan)(guan)(guan)又称(cheng)大小(xiao)头是(shi)(shi)化(hua)工(gong)管(guan)(guan)(guan)件之一(yi)(yi)，用(yong)于(yu)两种不同(tong)管(guan)(guan)(guan)径(jing)(jing)(jing)的(de)(de)(de)(de)连(lian)接。又分为同(tong)心大小(xiao)头和偏心大小(xiao)头。结构(gou)特(te)点(dian)偏心异径(jing)(jing)(jing)管(guan)(guan)(guan)材(cai)质(zhi)为碳钢,表示方(fang)法是(shi)(shi)大头直(zhi)径(jing)(jing)(jing)乘(cheng)以小(xiao)头直(zhi)径(jing)(jing)(jing)乘(cheng)以厚度。偏心异径(jing)(jing)(jing)管(guan)(guan)(guan)标(biao)准:国标(biao)美(mei)标(biao)英标(biao)以及(ji)各种非(fei)标(biao)高(gao)压(ya)冲(chong)压(ya).偏心异径(jing)(jing)(jing)管(guan)(guan)(guan)的(de)(de)(de)(de)缩(suo)径(jing)(jing)(jing)成(cheng)形(xing)工(gong)艺是(shi)(shi)将(jiang)与异径(jing)(jing)(jing)管(guan)(guan)(guan)大端(duan)直(zhi)径(jing)(jing)(jing)相等的(de)(de)(de)(de)管(guan)(guan)(guan)坯放入成(cheng)形(xing)模中(zhong),通过沿管(guan)(guan)(guan)坯轴向(xiang)方(fang)向(xiang)的(de)(de)(de)(de)压(ya)制,使金属(shu)沿模腔(qiang)运动(dong)并收缩(suo)成(cheng)形(xing).根据异径(jing)(jing)(jing)管(guan)(guan)(guan)变(bian)径(jing)(jing)(jing)的(de)(de)(de)(de)大小(xiao),分为一(yi)(yi)次压(ya)制成(cheng)形(xing)或(huo)多次压(ya)制成(cheng)形(xing).偏心异径(jing)(jing)(jing)管(guan)(guan)(guan)特(te)点(dian)是(shi)(shi)强山东龙昆耐(nai)磨(mo)(mo)陶(tao)瓷管(guan)(guan)(guan)：强度高(gao)、韧(ren)性(xing)(xing)好复(fu)合(he)管(guan)(guan)(guan)因充分发挥了(le)钢管(guan)(guan)(guan)强度高(gao)、韧(ren)性(xing)(xing)好、耐(nai)冲(chong)击、焊接性(xing)(xing)能好以及(ji)刚玉瓷高(gao)硬(ying)(ying)度、高(gao)耐(nai)磨(mo)(mo)、耐(nai)蚀(shi)、耐(nai)热性(xing)(xing)好，克服了(le)钢管(guan)(guan)(guan)硬(ying)(ying)度低、耐(nai)磨(mo)(mo)性(xing)(xing)差(cha)以及(ji)陶(tao)瓷韧(ren)性(xing)(xing)差(cha)的(de)(de)(de)(de)特(te)点(dian)。因此，复(fu)合(he)管(guan)(guan)(guan)具有良好的(de)(de)(de)(de)耐(nai)磨(mo)(mo)、耐(nai)热、耐(nai)蚀(shi)及(ji)抗机械(xie)冲(chong)击与热冲(chong)击、可(ke)焊性(xing)(xing)好等综合(he)性(xing)(xing)能。是(shi)(shi)输送颗粒物料、磨(mo)(mo)削(xue)、腐蚀(shi)性(xing)(xing)介质(zhi)等理想(xiang)的(de)(de)(de)(de)耐(nai)磨(mo)(mo)、耐(nai)蚀(shi)管(guan)(guan)(guan)道。宽泛用(yong)于(yu)电力、矿山、钢铁、水(shui)泥、化(hua)工(gong)等磨(mo)(mo)损样子行业。型号直(zhi)管(guan)(guan)(guan)、弯(wan)头,弯(wan)管(guan)(guan)(guan)、三(san)通,大小(xiao)头,另外可(ke)以生(sheng)(sheng)产(chan)(chan)裤(ku)衩管(guan)(guan)(guan),使用(yong)效果(guo)十钣金件加工(gong)设计材(cai)料制作流程(cheng)及(ji)注意事项钣金有时也作扳金，这个(ge)词来源于(yu)英文sheetmetal，一(yi)(yi)般是(shi)(shi)将(jiang)一(yi)(yi)些金属(shu)薄(bo)板通过手工(gong)或(huo)模具冲(chong)压(ya)使其产(chan)(chan)生(sheng)(sheng)塑性(xing)(xing)变(bian)形(xing)。山东304大小(xiao)头市场(chang)价

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