一個(gè)韋恩斯伯勒市（Waynesboro）制造的模樣將助約翰斯敦公司（Johnstown company）鑄造一個(gè)7萬6千磅重的渣罐。渣罐是為一家阿根廷工廠生產(chǎn)的，工人使用罐子熔化的鋼鐵澆注而成。利用這個(gè)模具，工廠一年可生產(chǎn)6個(gè)這樣的渣罐。

    精密模樣工程公司在西五街，是蘭迪斯機(jī)公司店鋪（Landis Machine Co shop）的舊址。而約翰斯敦特殊鑄造將它租下來用于生產(chǎn)一個(gè)該公司史上最大的單件模樣。

    公司的共同擁有人和鑄造師傅約瑟夫·佛羅倫薩先生說：“在過去四五年中，我們一直在為約翰斯敦特殊鑄造工作?！?/p>

    佛羅倫薩先生和公司的其他老板格雷格克良克頓（Greg Crunkelton）先生、鮑勃麥克卡德爾（Bob McCardell）先生以及雇員達(dá)里爾伍德林（Daryl Woodring）先生一起建造了這個(gè)獨(dú)特的模樣。

    根據(jù)佛羅倫薩先生的朋友比爾黑爾佛利克先生的描述，這個(gè)模樣直徑有12英尺，總體長度達(dá)16.5英尺。由一系列1.75英寸厚的環(huán)形結(jié)構(gòu)組成，每個(gè)環(huán)由16段接合而成。最后把這76個(gè)完整的環(huán)堆疊起來，粘在一起并用螺絲鎖住就制成了模樣的成品。

   他說：“這個(gè)項(xiàng)目需要大規(guī)模的工程和計(jì)劃，制作了數(shù)量龐大的模板和夾具。四個(gè)模樣工人緊張工作了2個(gè)月半，用掉了8000英尺的干糖松板才得以完成”。

    根據(jù)黑爾佛利克先生的介紹，在金屬鑄造中，模樣也就是將要制作的部件的反面形狀被放在一個(gè)金屬壺中，周圍充滿帶粘結(jié)劑的砂。當(dāng)砂變硬之后，把模樣取走，留下模具。要制造實(shí)際的鑄件，需把原材料放入鑄造廠的爐子里在2500度的高溫下熔化。

    黑爾佛利克先生解釋說：“當(dāng)金屬熔化時(shí)，雜質(zhì)或渣會(huì)浮起來，純凈的金屬則停留在底部。把質(zhì)量好的金屬倒入模具制造需要的鑄件后，渣會(huì)被倒入一個(gè)渣罐，后期再處理?！?/p>

    佛羅倫薩先生說：“這是我們迄今為止制作過的最大的模樣。它需要淵博的工程學(xué)知識(shí)和特殊的裝置來制作?？吹阶詈蟪鰜淼慕Y(jié)果我們都很高興。鑄造過程中也出現(xiàn)過一些小故障，但好在總體上這個(gè)項(xiàng)目還是順利的?！?/p>

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Precision Pattern Works makes massive mold for steel industry

A Waynesboro made pattern will help a Johnstown company cast a 76,000 pound slag pot, a pot molten steel is poured into, for a steel mill in Argentina. The mold will be used to make six slag pots per year.

Precision Pattern Works, located in the former Landis Machine Co shop on West Fifth Street, was hired by Johnstown Specialty Castings to create the largest, one piece pattern the company has ever made.

Co owner and master patternmaker Mr Joseph Florence said that "We've been doing work for Johnstown Specialty Castings for the past four or five years."

Mr Florence created the unique pattern with co owners Mr Greg Crunkelton and Mr Bob McCardell and employee Mr Daryl Woodring.

According to Mr Florence's friend Mr Bill Helfrick, the oval shaped, hollow pattern is 12 feet in diameter and 16.5 feet long. It is constructed of 1 and ¾ inch thick rings, each made from joining 16 segments. The 76 completed rings were stacked, glued and screwed together to form the finished pattern.

He added that "The project required extensive engineering and planning, and the making of many templates and jigs to obtain the finished result. 8000 board feet of seasoned sugar pine and 2 1/2 months of intensive work by four pattern workers were needed to complete the job."

According to Mr Helfrick, in metal casting, the pattern, a mirror image of the part to be made, is placed in a metal flask and packed with sand containing a bonding agent. When the sand has hardened, the pattern is withdrawn leaving the mold behind. To make the actual casting, raw material is placed in a foundry furnace, turning molten when exposed to 2,500 degree heat.

Mr Helfrick explained that "As the metal melts the impurities or slag rises to the top and the purer metal settles on the bottom. After the good metal is poured into the mold to make the desired casting, the slag is poured into a slag pot for later disposal."

Mr Florence said that "This was the largest pattern we have ever made. It required a lot of engineering and special fixtures to make it. We are delighted with the way it turned out. There were a few glitches along the way, but all in all, the job went pretty smoothly, which is a plus."