Cylindrical guide pillar — chromium plating and anticorrosive treating.
圆柱形导柱，镀铬防锈处理。
Chrome plating chromium plating for steel parts for Yin polarity coating.
铬镀层铬镀层对钢铁零件为阴极性镀层。
Trivalent chromium plating can be divided into chloride and sulfate systems.
三价铬电镀分为氯化物体系和硫酸盐体系。
It is similar to chromium plating, and the outward appearance is very excellent.
其外观效果特优，效果类似镀铬。
A rotary rack for chromium plating on surface of cylindrical articles was developed.
研制出一种用于圆桶形工件镀铬的旋转挂具。
Hexavalent chromium plating has weaknesses such as toxicity and environmental pollution.
六价铬电镀具有毒性大、环境污染严重等缺点。
The specific phenomenon are chromium plating and cathodic reduction on the particularity.
上述特异现象均与镀铬阴极还原的特殊性有关。
Formate-A acid system was a sulfate trivalent chromium plating process with low concentration.
甲酸-羧酸a体系是一种低浓度的硫酸盐三价铬电镀工艺。
The invention relates to a piston ring and a surface spongy chromium plating technique thereof.
一种活塞环及其表面松孔镀铬工艺。
Cylindrical anodes are conventionally used for chromium plating on surface of cylindrical articles.
圆柱形工件外表面镀铬常采用圆桶形阳极。
A new decorative chromium plating process for aluminium substrate is described with formulas given.
介绍一种在铝基体上装饰镀铬的新工艺及其配方。
The airtight function of chromium plating for piston rod is a knotty technical problem for aircraft factories.
活塞杆镀铬层的气密性问题，是航空工厂长期存在的一个老大难问题。
Several solution composition for cleaning, zinc dipping and subsequent copper, nickel, chromium plating are given.
文章中给出了若干清洗、浸镀锌以及后来镀铜、镍、铬加工液的配方。
In general, stainless steel piston rod plating, generally require the use of at least 3 times the chromium plating.
总的来说，不锈钢活塞杆的电镀，一般都需要采用至少3次的镀铬。
Meanwhile this paper also investigated the relationship between chromium plating and oxidation resistance of cast iron.
同时还研究了试样表面镀铬与其抗氧化性之间的关系。
Shenzhen (excellent) Ante Precision Industry Co. , Ltd. specializes in plastic plating, green trivalent chromium plating.
深圳市（卓越）安特精密工业有限公司专业致力于塑胶电镀、环保三价铬电镀。
Quality control of water, removal of impurities and other troubleshooting cases in rare earth chromium plating are described.
叙述稀土镀铬液中水质的控制、杂质的去除，以及其它故障的排除方法。
On that basis, according to the organic structure theory, Further explore the various mechanisms of chromium plating additives.
在此基础上，根据有机结构理论，进一步探讨了各类镀铬添加剂的作用机理。
It's urgent to develop the technique of trivalent chromium plating because of the heavy pollution of hexavalent chromium plating.
六价铬电镀工艺存在严重的环境污染问题，利用三价铬镀铬取而代之已经迫在眉睫。
The basic principle and the improvement of Santana spherical cast iron piston ring chromium plating technology is briefly introduced.
概要介绍桑塔纳球墨铸铁活塞环镀铬工艺的原理和改进过程。
Chromium plating in low chromic anhydride-containing bath at low temperature has been widely used for years for its peculiar advantages.
低温、低浓度镀铬具有其独特的优点，已推广使用多年。
In this paper, three types of bath for trivalent chromium plating are gained: chloride-glycine bath, chloride-U bath and sulfate-oxalic bath.
本文新近研究了一种以甲酸盐-羧酸盐作为络合剂的三价铬电镀新工艺，并对该溶液和镀层进行了性能测试。
The invention comprises the following procedures: preplating, etching, chromium plating, washing, removal of hydrogen, hole loosing, washing and drying.
本发明包括镀前工序、刻蚀工序、镀铬工序、水洗工序、除氢工序、松孔工序、水洗烘干工序。
For example steel base plated copper, nickel, chromium plating, low layer again tin bronze chrome, multi-layer nickel chrome plating nickel ferroalloy, chrome, and so on.
例如钢基上镀铜、镍层再镀铬、低锡青铜上镀铬、多层镍上镀铬、镍铁合金镀层上镀铬等等。
Laser quenched groove surface has high wear resistance, and its wear resistance is higher than that of groove by using high frequency quenching and chromium plating method.
激光淬火的环槽表面具有良好的耐磨性，比原高频淬火和镀铬工艺处理的耐磨性有较大提高。
The invention comprises the following procedures: preplating, etching, chromium plating, washing, removal of hydrogen, hole loosing, washing and drying and tin plating treatment.
本发明包括镀前工序、刻蚀工序、镀铬工序、水洗工序、除氢工序、松孔工序、水洗烘干工序、镀锡处理工序。
The present invention can eliminate six-valent chromium from chromium plating waste water fast, and has simple technological process, convenient operation, low cost and high effect.
本发明能迅速有效地去除镀铬废水中的六价铬，且工艺简单、操作方便、成本低，效果好。
Special treatment is recommended to activate beryllium copper surface before chromium plating. And special steps which differ from conventional chromium plating on steel parts are to be taken.
在铍青铜合金上电镀铝，需在镀铝前作特殊的表面活化处理，镀铬时也有不同于钢铁件镀铬的操作方法。
The deduction is confirmed by establishing self locking conditions and determining the sliding friction coefficients between sand and chromium plating layer and between sand and nitrided surface.
通过建立砂粒自锁条件及实测长石砂岩、石英砂岩与泵筒镀铬层或氮化层的滑动摩擦系数值，证实了对柱塞拉伤失效原因的推测是正确的。
The deduction is confirmed by establishing self locking conditions and determining the sliding friction coefficients between sand and chromium plating layer and between sand and nitrided surface.
通过建立砂粒自锁条件及实测长石砂岩、石英砂岩与泵筒镀铬层或氮化层的滑动摩擦系数值，证实了对柱塞拉伤失效原因的推测是正确的。
应用推荐