北京分析儀廠家供應(yīng)

company profile

Shanghai Uzong Industrial Co., Ltd. (hereinafter referred to as UZONGLAB®) is a high-tech company that provides integrated solutions for intelligent laboratories, mainly serving the Chinese market and countries along the “Belt and Road”. It has three business divisions and one The technology center, namely the instrument business department, consumables business department, project development department, and Zhongyu Lianhe Technology Center. In addition to the Shanghai headquarters, we have established branches in Beijing, Shenyang, Shijiazhuang, Taiyuan, Qingdao, Guangzhou, Chengdu and Urumqi. To provide customers with more professional, safer and more convenient products and services is our sole goal. ONH836儀器通過(guò)***采納客戶(hù)的反饋意見(jiàn)和創(chuàng)新設(shè)計(jì)。北京分析儀廠家供應(yīng)

氧氮?dú)浞治鰞x的使用注意事項(xiàng)：

1 、氧氮?dú)浞治鰞x在初次啟用前，應(yīng)該對(duì)連接點(diǎn)、焊點(diǎn)、閥門(mén)等進(jìn)行檢漏，以確?？諝庵械难醪粫?huì)反滲進(jìn)入管道及儀器內(nèi)部，造成測(cè)量數(shù)值偏高。

2、再次使用儀器前，要進(jìn)行管道系統(tǒng)凈化，將漏入的空氣除干凈，同時(shí)確保連接取樣管路時(shí)沒(méi)有漏入空氣。

3、樣氣中氧含量的變化會(huì)受管道材質(zhì)及表面粗糙度影響，因此一般連接管路選用銅管或拋光過(guò)的不銹鋼管，而不用塑料管、橡膠管等。

4、微量元素分析時(shí)，要避免各種管件、閥門(mén)、表頭等死角對(duì)樣氣造成污染，因此必須盡可能的簡(jiǎn)化氣路系統(tǒng)，連接件死角要小，以防止溶解氧逸出造成污染，使用水封、油封及臘封等設(shè)備，才能較好的確保數(shù)據(jù)的。

上海LECO分析儀廠家直銷(xiāo)OHN836系列儀器采用惰性熔融法。

Sample Preparation

Typically, titanium and zirconium samples are chemically etched to remove surface contamination when oxygen and nitrogen are determined. However, etching can introduce hydrogen into the sample.

ASTM method E 1409 "Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert

Gas Fusion Technique", as updated in 1996, permits either etching or abrading (filing) of the test specimen.

ASTM E 1447 "Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal

Conductivity/Infrared Detection Method" permits surface preparation by abrading (if necessary to remove

contamination). Differences in sample preparation present somewhat of a dilemma regarding simultaneous

determination of O, N, and H in titanium. However, abrading samples with a file to remove surface

contamination will yield accurate O, N, and H results. The ONH836 utilizes a high-power electrode furnace to quickly and efficiently release the target gases from within the sample, which allows for a very rapid simultaneous determination of oxygen, nitrogen, and hydrogen.

氧氮?dú)浞治鰞x的原理：分析樣品在惰性氣流存在下于石墨坩堝中加熱熔融，其中脈沖爐溫度可自由設(shè)定，并通過(guò)一個(gè)非接觸式的光學(xué)溫度傳感器進(jìn)行實(shí)時(shí)監(jiān)控，用于實(shí)現(xiàn)樣品的完全分解，反應(yīng)所生成的CO H2和N2被帶入到具有高穩(wěn)定性和靈敏度的檢測(cè)系統(tǒng)進(jìn)行檢測(cè)。對(duì)于CO的檢測(cè)采用的是非色散性紅外檢測(cè)器，對(duì)于N2和H2的檢測(cè)則采用熱導(dǎo)檢測(cè)器。

氧氮?dú)浞治鰞x的特點(diǎn)：快速準(zhǔn)確分析，自動(dòng)化操作；精密氣體校準(zhǔn)；CO紅外檢測(cè)器，高分辨率和重現(xiàn)性的N、H熱導(dǎo)池檢測(cè)器；同一臺(tái)儀器實(shí)現(xiàn)熔融提取和熱提??；熱提取分析時(shí)間可調(diào)；可自由選擇溫度*高達(dá)2500 °C；光學(xué)溫度計(jì)溫度測(cè)定和控制；所有檢測(cè)器自動(dòng)調(diào)零/自動(dòng)水平控制（ALC）；數(shù)據(jù)評(píng)估的自動(dòng)優(yōu)化選擇范圍；爐自動(dòng)清潔和坩堝自動(dòng)進(jìn)樣（可選）；外設(shè)電腦進(jìn)行操作和控制；樣品信息保存； 所有樣品數(shù)據(jù)可追蹤查詢(xún)；通過(guò)FTP或本地局域網(wǎng)進(jìn)行數(shù)據(jù)傳輸； ON，H分析輕松切換。

通用下電極坩堝支座，容納各種坩堝使用。

Method Selection

Two methods are described in this application note; either method can be used to analyze iron, steel, nickel-, and cobalt-base alloys. The Precision Method is recommended for general use and will provide the best precision and accuracy throughout the typical O, N, and H concentrations found in this group of metals; approximate cycle time is 3.5 minutes. The Fast Track method can be used where speed of analysis is a critical component; for example, when molten metal is being sampled and results are required in the shortest possible time. This method will produce suitable results for most samples; approximate cycle time is 2.25 minutes. As noted above, sampling and sample preparation are key elements to accurate O, N, and Hdetermination as well. It is up to the user to determine which method best meets their needs.

高級(jí)診斷程序包括全數(shù)字化的在線操作手冊(cè)、維護(hù)模擬演示、圖片說(shuō)明等提供快速指導(dǎo)。浙江LECO分析儀價(jià)格

可選六軸可旋轉(zhuǎn)觸摸屏幕，增強(qiáng)了操作的工效和直觀性。北京分析儀廠家供應(yīng)

Summary

The determination of the amount of oxygen, nitrogen, and hydrogen in iron, steel, nickel-, and cobalt-base alloys represents some of the most important quality metrics for these materials. Oxygen is used to create steel from pig iron by removing excess carbon. Oxygen content must be controlled to limit the amount of carbon monoxide that can be formed during solidification which may cause excessive porosity. Nitrogen is considered both an impurity as well as an important alloying agent. Itcan be present as a nitride or interstitially in its gaseous form. Increased nitrogen content is known to increase yield and tensile strength, thus decreasing ductility and formability. Excessive levels may evolve during solidification thus increasing porosity. High hydrogen content is the primary cause of embrittlement, blistering and flaking due to its high

mobility through the lattice and provides no potential alloying benefits. The ONH836 utilizes a high-power

electrode furnace to quickly and efficiently release the target gases from within the sample, which allows

for a very rapid simultaneous determination of oxygen, nitrogen, and hydrogen.

北京分析儀廠家供應(yīng)