真空变压（可控气氛）大型井式渗氮炉（生产线）

Vacuum variable pressure (controllable atmosphere) large well nitriding furnace (production line)

 应用/ apply:
PJ-井式真空脉冲渗氮炉属标准节能环保型周期作业氮化电炉。主要供各种钢制机械零件、汽车配件，模具材料，不锈钢材料进行渗氮、，氮碳共渗、前氧化、后氧化、氧氮共渗等多种热处理工艺之用

PJ- well type vacuum pulse nitriding furnace is a standard energy saving and environment friendly periodic operation nitriding furnace. It is mainly used for various heat treatment processes, such as nitriding, nitrocarburizing, pre-oxidation, post-oxidation, oxygen-nitriding and so on, for all kinds of steel mechanical parts, auto parts, die materials, stainless steel materials, nitriding, nitrocarburizing, pre-oxidation, post-oxidation, oxygen-nitriding and so on.。
特点 /characteristic:
1. 渗速快 /Fast seepage speed
渗氮工艺是在低真空状态下进行炉内压力周期式变化，气氛保持新鲜、活性，氮势也呈周期式变化，使一段氮化具有二、三段氮化的优点，无需采用二、三段氮化，加快了氮化速度

The nitriding process is to change the pressure cycle in the furnace under the condition of low vacuum, the atmosphere keeps fresh, the activity, the nitrogen potential also shows the periodic change, causes the first stage nitriding to have the two, the third stage nitriding the advantage, does not need to adopt the second, the third stage nitriding, accelerates the nitriding rate.

2. 适应性广、渗层均匀

Wide adaptability and uniform seepage layer

3.  工件有盲孔、T型面或工件工作面在极窄的狭缝里，对于传统的正压氮化炉而言，这不利于新鲜气氛的更换和扩散，这些部位的氮化效果不理想，真空脉冲变压技术使炉气自动扩散到罐内各处，无死角。盲孔、毛孔及模具狭缝处工作面也能得到所需渗层

The workpiece has blind hole, T-shaped surface or workpiece working face is in a very narrow slit, which is not conducive to the replacement and diffusion of fresh atmosphere for the traditional positive pressure nitriding furnace. The nitriding effect of these parts is not ideal. Vacuum pulse pressure conversion technology makes the furnace gas automatically spread to all parts of the tank without dead angle. The required seepage layer can also be obtained in the working face at the blind hole, pore and die slit.

3. 装炉量大、加工成本低

The charging capacity is large and the processing cost is low.
采用真空脉冲变压技术，在低真空和变压的环境下完成渗氮（氮化）工艺过程，新鲜气氛可渗透到炉罐内任一角落，所以工件可以密装，使装炉量大大增加，同时，该炉密封性，保温性能好，从而显著降低处理成本

Vacuum pulse pressure conversion technology is used to complete nitriding (nitriding) process in low vacuum and pressure changing environment. The fresh atmosphere can penetrate into any corner of the furnace tank, so the workpiece can be packed closely, which greatly increases the charging capacity. At the same time, the furnace has good sealing and heat preservation performance, thus significantly reducing the treatment cost.

3. 表面摩擦系数小

Small surface friction coefficient
因真空脉冲变压技术使工作的表面氮化物渗层极为致密，故表面摩擦系数小

The surface-nitride layer of the working surface is very dense due to the vacuum pulse transformation technology, so the surface friction coefficient is small.。

4. 脆性低 Low brittleness

炉压的周期性变化，使炉内气氛的氮势产生周期的变化，在加快渗速的同时，能抑制脆性相（Fe2N）的出现，并有助于降低脆性，有效地避免了工作过程出现的剥落（脱皮）现象

The periodic change of furnace pressure makes the nitrogen potential of furnace atmosphere change periodically. While speeding up the infiltration rate, it can inhibit the emergence of brittle phase (Fe2N), help to reduce brittleness, and effectively avoid the phenomenon of peeling (peeling) in the working process.

5. 工艺稳定 Process stability
炉内气氛均匀可控，炉温均匀，从而保证工艺稳定性，提高和保证了工作的渗氮质量

The atmosphere in the furnace is uniform and controllable, and the furnace temperature is uniform, so as to ensure the stability of the process and improve and ensure the nitriding quality of the work.

5. 环保 /environmental protection

炉子密封性好，废气经真空泵抽出经过高温裂解排出，属环保产品

The furnace has good sealing property, and the exhaust gas is extracted by vacuum pump and discharged by high temperature cracking. It is an environmental protection product.

特点 /characteristic.

1； 采用全波纹马弗和导流筒、强对流循环风机等特殊的对流循 环系统，提高了炉内热交换能力和炉温及气氛的均匀性

The heat exchange capacity of the furnace and the uniformity of the furnace temperature and the atmosphere are improved by adopting a special convection circulation system such as a full-corrugated muffle and a guide cylinder and a strong convection circulating fan.

2； 控制系统采用德国顶级品牌保证产品质量均匀一直稳定

The control system adopts the top German brand to ensure the product quality is uniform and stable all the time.

3； PE氮化专家系统可离线模拟氮化工艺、在线计算氮化层深度及硬度梯度

PE nitriding expert system can simulate nitriding process offline and calculate the depth and hardness gradient of nitriding layer on line.

4； 氢探头氮势测量系统，质量流量控制系统保证氮化工艺在线实时控制

Hydrogen probe nitrogen potential measurement system, mass flow control system to ensure on-line real-time control of nitriding process。

5； 氮化后可进行快速气冷，提高氮化层质量

Rapid gas cooling can be carried out after nitriding to improve the quality of nitriding layer.。

6； 整体设计按照欧洲安全标准

Overall design in accordance with European security standards。

7； 采用一体化集成可变程序控制器，集炉温控制、氮势控制、机电动作、联锁、报警为一体，保障了设备运行的高可靠性

The integrated variable program controller is adopted, which integrates furnace temperature control, nitrogen potential control, electromechanical action, interlocking and alarm, which ensures the high reliability of the equipment operation.

8； 渗氮过程通过对温度、Kn、Kc、Ko等参数进行准确控制，以达到对氮化物的形态和组织实 现动态控制

Through the accurate control of temperature, Kn,Kc,Ko and other parameters in nitriding process, the dynamic control of nitride morphology and microstructure can be achieved.。

9； 采用上位机系统，可进行工艺程序编制、工艺运行操作控制、工艺过程状态显示、工艺运行记 录，报警信息记录等系统管理

The upper computer system can be used for process programming, process operation control, process state display, process operation recording, alarm information recording and other system management.。

配置选择/Configure select:

炉型结构：井室

Furnace structure: well chamber

真空泵组和真空计：进口/高品质国产

Vacuum pump group and vacuum gauge: imported/ high-quality domestic

真空压力：预抽真空

Vacuum pressure: pre-pumping vacuum

PLC:西门子/欧姆龙/三菱

PLC: Siemens/ Omron/Mitsubishi 

温控仪表：欧陆/导电

Temperature control instrument: European/Shimaden

热电偶： N型分度号/渗氮专用

N-type grade number / nitriding special purpose

记录仪：有纸记录仪；无纸记录仪

Recorder: paper  recorder ；paperless recorder

人机界面：模拟屏/计算机触摸屏

Man-machine interface: analog screen/computer touch screen

电器元件：高品质国产/施耐德/西门子

Electrical components: high quality domestic/ Schneider/Siemens

产品 规格/ product specifications：

注：特殊规格要求可根据客户要求定制

Note: special specification requirements can be customized according to customer requirements

以下参数可根据工艺要求调整，不作为验收依据，具体以技术方案和协议为准

The following parameters may be adjusted according to the process requirements and shall not be used as the basis for acceptance, depending on the technical scheme and agreement