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***采納客戶的反饋意見和創新設計。北京分析儀廠家供應

氧氮氫分析儀的使用注意事項：

1 、氧氮氫分析儀在初次啟用前，應該對連接點、焊點、閥門等進行檢漏，以確保空氣中的氧不會反滲進入管道及儀器內部，造成測量數值偏高。

2、再次使用儀器前，要進行管道系統凈化，將漏入的空氣除干凈，同時確保連接取樣管路時沒有漏入空氣。

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

4、微量元素分析時，要避免各種管件、閥門、表頭等死角對樣氣造成污染，因此必須盡可能的簡化氣路系統，連接件死角要小，以防止溶解氧逸出造成污染，使用水封、油封及臘封等設備，才能較好的確保數據的。

上海LECO分析儀廠家直銷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.

氧氮氫分析儀的原理：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定，并通過一個非接觸式的光學溫度傳感器進行實時監控，用于實現樣品的完全分解，反應所生成的CO H2和N2被帶入到具有高穩定性和靈敏度的檢測系統進行檢測。對于CO的檢測采用的是非色散性紅外檢測器，對于N2和H2的檢測則采用熱導檢測器。

氧氮氫分析儀的特點：快速準確分析，自動化操作；精密氣體校準；CO紅外檢測器，高分辨率和重現性的N、H熱導池檢測器；同一臺儀器實現熔融提取和熱提取；熱提取分析時間可調；可自由選擇溫度zui高達2500 °C；光學溫度計溫度測定和控制；所有檢測器自動調零/自動水平控制（ALC）；數據評估的自動優化選擇范圍；爐自動清潔和坩堝自動進樣（可選）；外設電腦進行操作和控制；樣品信息保存； 所有樣品數據可追蹤查詢；通過FTP或本地局域網進行數據傳輸； 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.

高級診斷程序包括全數字化的在線操作手冊、維護模擬演示、圖片說明等提供快速指導。浙江LECO分析儀價格

可選六軸可旋轉觸摸屏幕，增強了操作的工效和直觀性。北京分析儀廠家供應

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