الإخبارية

How to calculate the compressive strength of cartons?

Cartons are required to have a certain compressive strength, because after packing goods in the process of storage and transportation, the cartons stacked in the lower layer are under the pressure of the upper cartons. In order to avoid collapse, they must have appropriate compressive strength. The compressive strength of cartons is calculated by the following formula: P = KW (n – 1) In the formula, ص—- carton compressive strength, N W—- Carton weight after loading, N N —- Number of stacking layers K—- [...]

فحص الإجهاد البيئي (وفاق سطيف) اختبارات

The objective of the ESS test is to eliminate early death parts (including structural, material, manufacturing, shipping, and storage defects) as early as possible before they are assembled into the product to avoid the cost of midproduction impacting timetables and failure during the mission. Stabilization Bake 1. Stabilization Bake Based on MILSTD – 883 Method 1008, Condition C rules, the electronic components into constant temperature box, the rated storage temperature, the temperature rise to parts for 24 hours of [...]

مبدأ اختبار غرفة اختبار رش الملح والتشغيل

Salt spray test chamber test principle Salt spray test chamber can do four kinds of tests: اختبار رش الملح المحايد (NSS), اختبار رش ملح خلات النحاس (كاس), اختبار رش الملح بالتناوب, اختبار رش الملح خلات (اختبار الحمار).بالطبع, الاختبارات المختلفة لا تتطلب حلولاً مختلفة فقط, ولكن قد يكون تصميم الصندوق وبنيته مختلفين أيضًا. 1. درجة حرارة غرفة اختبار رش الملح المحايد (NSS) يشترط أن يكون عند (35±2)℃, الرطوبة أكبر من 95%, [...]

جهاز اختبار رش الملح بعد الانتهاء من الاختبار كيفية التعامل مع العينة?

Salt spray test is a kind of artificial simulation of salt spray environment test, compared with the atmospheric conditions of exposure test, it has significant advantages, corrosion environment can be controlled, the environment reproducibility is good, greatly saving the test time and human resources and financial resources.Exposing product defects through tests is an essential and important test means in the whole process of new product development, prototype test and product qualification appraisal test. Salt spray tester after the completion of [...]

طريقة فعالة للحد من ضوضاء درجة حرارة ثابتة وغرفة الرطوبة

The constant temperature and humidity box is one of the climate simulation boxes, which is suitable for examining the moisture and heat aging of various products or plastic parts of tower core.And household appliances, الادوات, meters, components and other electrical and electronic products, in high temperature, درجة حرارة منخفضة, hot and humid, alternating hot and humid environment conditions of adaptability.To do STH.The constant temperature and humidity case contains six systems: refrigeration system, heating system, mechanical environment, humidity system, sensor system, [...]

فرق التطبيق بين مقياس الألوان ومقياس الطيف الضوئي

كيفية وضع معايير اللون, تحسين مظهر المنتج, مراقبة جودة الألوان, ومطابقة الألوان بالكمبيوتر?هنا لا بد أن نذكر أداة كشف الألوان – مقياس اللون. في الوقت الحالي, هناك أنواع كثيرة, العلامات التجارية والشركات من أدوات قياس الألوان. بعض العملاء ليسوا على دراية بقياس الألوان. في مواجهة أنواع مختلفة من الأدوات, فهل ستكون هناك فجوة كبيرة في الأسعار ونتائج قياس مختلفة?لماذا يسمى البعض أدوات الانحراف اللوني, ويطلق عليها البعض مقاييس الطيف الضوئي?What are the differences [...]

المعرفة الأساسية باللون — مختبر, Lch لون الفضاء ثلاثي الأبعاد

1.1. The definition of “إل, لقطة شاشة QQ 20180731180926A, تاوب بيرجر ستينسبي”During 1950s and 1960s, Hunter Lab established color space, which was represented by THREE-DIMENSIONAL coordinates of L, A and B The “إل” represents the brightness of the object: 0-100 represents the range from black to white “لقطة شاشة QQ 20180731180926A” represents the object’s red-green color: positive values represent red, and negative values represent green “تاوب بيرجر ستينسبي” represents the object’s yellow and blue color: positive values represent yellow, and negative values represent blue 1.2.Establish the meaning ofL A Bcolor space The [...]

Knowledge of colour measurementabout the illumination and observation geometry of chromatic aberration instruments

Knowledge of colour measurement About the illumination and observation geometry of chromatic aberration instrumentsThe human eye cannot quantify color correctly, but we can use chromatic aberration instruments and spectrometers to measure color, which is quite simple.And the position relation among the lighting source, the measured sample and the sensor is the illumination observation geometric condition in the color measurement, referred to as geometric condition.Cie15:2004 recommends ten types of reflective sample measurement geometry:1.di:8 Diffuse illumination, 8° receiving, including specular reflection component.The sample [...]