上周钨精矿、仲钨酸铵行情走势分析（6月30日-7月4日） (4)

上周钨精矿、仲钨酸铵行情走势分析（6月30日-7月4日）

一、钨精矿、仲钨酸铵价格走势

    本周钨精矿、仲钨酸铵报价较为平稳。据生意社价格监测，本周65%黑钨精矿主流报价118000元/吨左右，实际成交价115000元/吨。本周牌号为APT-0的仲钨酸铵报价171500元/吨左右，实际成交价168000元/吨。

二、市场行情分析

    本周钨精矿市场运行较为平稳，传统销售淡季更是利空钨市场，钨精矿市场需求延续低迷状态，成交持续清淡，部分商家为了缓解资金压力，出货相对积极。

    本周仲钨酸铵市场运行较为疲软，虽然厂家对外报价走稳，但因市场需求较为低迷，厂家调价动力不足，部分成交重心略有下移，仲钨酸铵行情稳中趋弱。

三、后市预测

    本周钨精矿、仲钨酸铵整体运行略微疲软，传统淡季的到来利空钨市场，生意社分析师认为短期内黑钨精矿、仲钨酸铵市场将延续平稳态势运行。

钨产品生产商、供应商：中钨在线科技有限公司
产品详情查阅：http://www.chinatungsten.com
订购电话：0592-5129696 传真：0592-5129797
电子邮件：sales@chinatungsten.com
钨钼文库：http://i.chinatungsten.com
钨新闻、价格手机网站，3G版：http://3g.chinatungsten.com
钼新闻、钼价格：http://news.molybdenum.com.cn
关注微信公众号“中钨在线”，了解每日最新钨钼价格

钨酸

三、生产储运

The Thermal Decomposition of Ammoniu Metatungstate

The thermal decomposition of ammoniu metatungstate(AMT)involved several steps in inert atmosphere: (i)That is release of crystal water between 25°C and 200°C resulte in dehydrated AMT. (ii) The formation of an amorphous phase between 200°C and 380 °C.

阅读更多：The Thermal Decomposition of Ammoniu Metatungstate

Forming and Stamping of Tungsten

Tungsten can be fabricated into many simple shapes and configurations. It can be folded, bent, formed, spun, flow-turned, sheared, stamped, punched, and riveted. On the other hand, tungsten is a strong, hard, crack-sensitive metal that is usually brittle at room temperature. It requires special handling and skill beyond that necessary for most metals and alloys.

The most important rule to remember when working with tungsten is that it must be formed or cut at temperatures well above its transition temperature. Failure to follow this rule will generally result in cracked or laminated parts. Care should be taken to insure that the metal remains at this temperature throughout the entire forming process. The use of cold tooling which rapidly chills the metal can be as harmful as not preheating the material.

阅读更多：Forming and Stamping of Tungsten