上海分析儀

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.

***紅外池的恒溫絕熱技術(shù)消除了外界環(huán)境溫度的干擾。上海分析儀

Sample Preparation

Sampling and sample preparation is an important issue because traditional methods used to obtain samples for oxygen and nitrogen determination are different from those recommended for hydrogen, especially when sampling molten metal. The main difference in steel sampling procedures for oxygen/nitrogen and hydrogen is due to the mobilityof hydrogen. Special precautions must be used when sampling for hydrogen. From molten steel and iron, a sample must be quickly quenched in cold water and chilled in a refrigerant such as liquefied nitrogen or a mixture of acetone and solid carbon dioxide in order to reduce losses of hydrogen from diffusion. Losses of oxygen and nitrogen from diffusion are not a problem. A sample that is taken for hydrogen and

chilled in a refrigerant can also be used for oxygen and nitrogen determination. However, a sample that is typically taken for oxygen and/or nitrogen determination is not suitable for hydrogen determination due to hydrogen loss (diffusion). Surface contamination must be removed by filing or light grinding, using care not to overheat the sample.

山東LECO分析儀優(yōu)惠價(jià)格可選具有壓力補(bǔ)償和溫度控制性能的標(biāo)氣檢測(cè)氣路。

Procedure – Powder/Chip Samples

Instrument calibration/drift correction.

Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open.

Place the Nickel Capsule containing the sample into the open port at the top of the loading head.

Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.

Clean the upper and lower electrode either manually or remove the crucible and press the analyze button to clean with an automatic cleaner if applicable.

Oxygen, Nitrogen, and Hydrogen in Refractory Metals

Summary

Oxygen and nitrogen are alloying elements in titanium, and are also classified as alpha stabilizing elements as they promote alpha phase alloys. Interstitial oxygen and nitrogen levels can be used to regulate the tensile strength of the material, but due to its high solubility can cause unwanted surface embrittlement. This phenomenon can be leveraged,however, under controlled processing to create surface films that increase surface hardness and wear properties.

美國力可LECO氧氮?dú)浞治鰞x

公司介紹：

美國力可公司(LECO)始于1936年 ，以生產(chǎn)用于冶金、機(jī)械、能源、化工、農(nóng)業(yè)、食品及科研開發(fā)領(lǐng)域的各種分析儀器。

ONH836氧氣/氮?dú)?氫氣元素分析儀設(shè)計(jì)用于使用惰性氣體熔融技術(shù)對(duì)無機(jī)材料，鐵和非鐵合金以及耐火材料中的氧，氮和氫含量進(jìn)行寬范圍的測(cè)量。

堅(jiān)固的樣品加載區(qū)域可簡化日常維護(hù)并大程度減少大氣污染

用于氧氣檢測(cè)的三重紅外電池可實(shí)現(xiàn)業(yè)內(nèi)大的檢測(cè)范圍

通過自動(dòng)化選項(xiàng)提高實(shí)驗(yàn)室生產(chǎn)率

可用的自動(dòng)清潔器大程度地減少了兩次分析之間的手動(dòng)清潔需求

適用于坩堝和樣品的20位往復(fù)式裝載機(jī)

安裝在動(dòng)臂上的觸摸屏界面可提供更好的人體工程學(xué)設(shè)計(jì)和直觀的操作

紅外（IR）和熱導(dǎo)率（TC）檢測(cè)器，沒有活動(dòng)部件，也無需手動(dòng)調(diào)節(jié)

改善TC電池的穩(wěn)定性

可繞過的OMI-2載氣洗滌塔，提高了TC電池的穩(wěn)定性

獲得Dyanamic流量補(bǔ)償可進(jìn)一步增強(qiáng)TC細(xì)胞的穩(wěn)定性

裝有自動(dòng)旁路閥的可快速拆裝氧水捕集裝置。浙江LECO氧氮?dú)浞治鰞x咨詢報(bào)價(jià)

20位或100位全自動(dòng)分析系統(tǒng)。上海分析儀

美國LECO力可氧氮?dú)浞治鰞xONH836（氧氮?dú)渎?lián)測(cè)儀）系列硬件部分

特點(diǎn)和優(yōu)勢(shì)

1、爐頭區(qū)域LED照明系統(tǒng)

2、爐頭快速拆裝的粉塵過濾裝置

3、裝有自動(dòng)旁路閥的可快速拆裝氧水捕集裝置

4、**的動(dòng)態(tài)流量補(bǔ)償（DFC）保證熱導(dǎo)池氣體流量、壓力恒定

5、改進(jìn)的紅外檢測(cè)池技術(shù)

     新紅外池的恒溫絕熱技術(shù)消除了外界環(huán)境溫度的干擾

   長壽命的紅外發(fā)射光源和無漂移的電路設(shè)計(jì)保證紅外檢測(cè)池的長期穩(wěn)定

   氧高低雙量程采用3個(gè)碳紅外檢測(cè)器，同時(shí)檢測(cè)一氧化碳和二氧化碳，保證準(zhǔn)確定量

  6、高效脈沖爐冷卻系統(tǒng)

   強(qiáng)力內(nèi)循環(huán)水冷裝置

   雙直流風(fēng)扇保證持續(xù)冷卻，不受電壓波動(dòng)的影響

   新電極爐頭設(shè)計(jì)，提高脈沖爐熱交換效率

  7、全自動(dòng)分析系統(tǒng)（可選）

   自動(dòng)清掃裝置

   20位或100位全自動(dòng)分析系統(tǒng)

   高速全自動(dòng)真空除塵裝置直接將粉塵排至儀器外部捕集器中，消除環(huán)境污染

上海分析儀