铬的

In order to improve anti-corrosion and anti-oxidation properties of Q235 steel,the processes of chro maluminizing were studied based upon the results of chromizing and aluminizing of this steel.

为提高Q235钢的耐氧化性和耐蚀性，进行了渗铬和渗铝，在此基础上进行了铬铝共渗。

The hardness of HSS roll was over 66 HRC, the depth of hardened layer excesses 30 mm, the variation of hardness in the roll surface was smaller than 1.5 HRC, and the wear resistance of HSS roll was better than that of high chromium cast iron roll and high nickel chromium indefinite hilled cast iron roll, close to that of powder metallurgy hard alloy roll.

研制出的高速钢轧辊硬度超过66HRC，淬硬层深度超过30mm，辊面硬度差小于1.5HRC，耐磨性优于高铬铸铁和高镍铬无限冷硬铸铁轧辊，接近硬质合金轧辊。

Transportation and storage.2 Oiling Oiling is to prevent white rusts formed on product surfaces during transportation and storage.

铬酸钝化处理铬酸钝化处理是为了防止产品在运输和贮存期间产生白锈而进行的化学处理。

The optimum content of Zn-Cr film coating bath have been concluded as follows:1000g/L zinc powder,2wt% chromate,0.2wt% acrylic acid,7vt% polyvinyl alcohol through the quadrature experiment.

通过正交试验筛选出锌铬涂液的最佳组分为：锌粉1000g／L、铬酐2wt％、丙烯酸0.2wt％、聚乙烯醇7wt％。

The hydrolysis of chrome-tanned shavings modified by Cr-Al complex and the application of its product in tanning and retanning are discussed in this paper.

探讨了用铬—铝络合物改性铬革屑水解液及其产品在鞣制或复鞣中的应用。

A process of alkaline hard chromium plating on aluminum alloy was presented,including oil removal,dipping in heavy metal solution,acid pickling,dipping in zinc solution,hard chromium plating.

1前言铝合金电镀硬铬，是利用强碱性的锌酸盐溶液在置换锌层上直接镀铬，其工艺成熟，操作简便、易行。

Cr is a ferritic form elements in stainless steel, so the chromium the formation of crystal structure and austenitic formation is a competition between elements.

铬是一种铁素体形成元素，所以铬在不锈钢晶体结构的形成上和奥氏体形成元素之间是一种竞争关系。

Dense chrome bricks are made from chrome powder which is spraied into granule, and pressed into flans through cold isostatic pressing, then fired through long-playing high temperature.

致密氧化铬砖是由氧化铬微粉先经喷雾造粒干燥后，再通过冷等静压超高压压制，最后经高温长时间缓慢烧制而成的。

Objective To compare the clinical effect of the Ni-Cr alloy,Gold-plating Ni-Cr alloy,Titanium alloy and Au-Pd alloy coping of the porcelain-fused-to-metal.

目的 评价镍铬合金、镀金镍铬合金、钛合金、金钯合金4种金属烤瓷冠的临床应用效果。

Mainly engaged in plastic plating technology research, development, production and processing, the company's main products are copper, bronze plating, nickel, nickel-plated black, and the plating of trivalent chromium 6 Trivalent chromium, and so on.

永翔五金塑胶有限公司主要从事塑胶电镀技术的研究、开发、生产及加工，目前公司主要产品有镀铜、镀古铜、镀镍、镀黑镍、镀三价铬及六价铬等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。