第十六章 寒铁炉·二次北返
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第十六章寒铁炉·二次北返(第1/2页)
往北的路,越走越冷。第三天晌午,陆铸翻过最后一道冰梁,看见寒铁炉的烟囱——三根,一根粗的、两根细的,在铅灰色的天幕下喷着蓝白色的烟。那是寒铁熔炼的标志色,隔着一道山梁都看得清清楚楚。
炉区门口的风雪里,立着一个人:老赵。他拄着那条断腿配套的拐杖,披着一件翻毛旧皮袄,帽檐上结了霜,看见陆铸的摩托拐过山角,先是一愣,随即咧开嘴笑了,声音被风刮得断断续续:“陆兄弟!算着你这两日该到了!“
陆铸熄火下车,把护目镜往上一推,没寒暄,先问:“三号炉的数据呢?“
“什么三号炉?“老赵要拄拐迎他,被他摆手止住,“你这一路风雪的,先进屋喝口热的!“
“数据。“陆铸把车撑好,“在路上我把熔炉总图又过了一遍,寒铁炉心的壳要用三号炉的那套真空拉弧工艺,产量多少、能耗多少、温控精度多少,都得对上数。对了数,才能往下推。“
老赵看着他,笑骂了一句:“还是这德行。行,进屋,我让娃子把三号炉的台账搬来——这半年,每炉的记录都在,一页没少。“
陆铸在他身后跟进炉区,一边走一边看:炉区扩了,原来那座选矿厂改的主炉区旁边,又接出了一跨厂房,钢梁是新的,焊缝整齐,用的是寒铁一号的边角料;学徒们往来的脚步比半年前稳当,见了人先停步、再让路,有人认出他,眼睛一亮,喊了声“陆师傅“,被老赵一瞪:“干活!账上见!“
“半年,三座炉。“陆铸把这一切看在眼里,进了值班室,脱了皮袄,先问,“产量呢?“
老赵把一本厚台账推过来:“一号炉真空感应,月产寒铁锭一百二十吨;二号炉电弧,月产一百六十吨;三号炉小试,不计产量,专出配方。“他顿了顿,“加一起,够你那张总图吃一年的。“
陆铸翻了翻台账,忽然笑了:“老赵,你教会了他们记账。“
“你定的规矩。“老赵也笑了,“一月一报,一报三份,炉房、账房、信标塔各一份。他们现在比我还精。“
“好。“陆铸合上台账,“那我也不跟你客套了——这一趟来,我不视察,我攻关。三件事,每件都是一场硬仗:第一,寒铁脆性,得压下来;第二,量产,得上量;第三,新合金和极寒设备,得配齐。三件事办完,我西行,去流沙堡。“
老赵闻言,收了笑,正色:“脆性这事,我也琢磨半年了——一号炉出的锭子,硬度够了,韧度差了火候,锻大件的时候,十件里有三件裂。你说怎么办,我给你烧。“
“凉拌。“陆铸把三号炉的台账摊在桌上,拿铅笔在空白页画了一个坐标系,“寒铁的性子,硬而脆,根子在晶格——太规矩了,像一整块冰,冰厚了,一敲就碎。要破这个局,得往冰里掺'杂质',让晶粒之间咬着,不整块碎。三个方向,你烧炉我来验:掺钒,看会不会更脆;掺钛,看韧性给多少换多少硬度;掺陨铁,看声谐振变不变。一炉一炉试,数据说话。“
“那就烧。“老赵拍板,“三号炉明早热炉,一天三炉料,够你试到过年。“
接下来的七天,三号炉烟囱里的蓝白烟几乎没断过。
陆铸蹲在三号炉边,一炉一炉地验。第一炉:寒铁+钒,千分之五。他指尖搭在锭子表面,金之力透进去扫描晶格,眉头就皱起来:“更脆了,晶粒碎成渣。钒这条线,毙了。“
第二炉:寒铁+钛,千分之八。出炉的锭子颜色发灰,他敲了敲,听声,又试了试硬度:“韧性上来了一成二,硬度掉了一成。钛是条线,但掉硬度太多,得调比例。“
第三炉:寒铁+陨铁,百分之三。这一炉出炉的时候,连老赵都站到炉口边上——锭子表面泛着青黑的光,用听风锤敲上去,声音不像前两炉那样“叮“的清脆,而是“嗡“的一声,压着尾巴,像敲了一口古钟。
“声变沉了。“老赵眼睛一亮,“晶粒是细的还是粗的?“
陆铸指尖按在锭子上,金之力一寸寸扫过去,半天,吐出一口气:“细的。细密得像织锦——每根晶须都咬着旁边那根,谁也不松口。老赵,这炉,成了。“
第四天,他们按“寒铁一百、陨铁八、钛零点六“的配比出了正式的一炉。出炉的锭子,青黑泛紫,表面星河纹路比一号炉的还密。陆铸把它锻成一条二指宽的长条,先敲后弯——弯到一百二十度,没裂;再弯到一百五十度,表面起了白线,用听风锤一敲,“咔“地一声断在弯点,断口是细密的鱼鳞纹,不是崩茬。
“寒铁四号。“他拿着断口看了半天,抬头说,“莫氏九点三,没掉多少;韧性,比一号提了四成;热裂倾向,基本压住了。“他顿了顿,“老赵,以后大件,都用四号料。“
“四号……“老赵把配方记在工作
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