Déanann a chinntiú ar an séalaithe tar éis athlíonadh ocsaíd mhaginear i bhfad níos éifeachtaí má tá próiseas séalaidh an-iontaofa á úsáid, má dhéantar iniúchadh docht ar ghlanadh an chomhshaoil, agus má bhaineann sé le rátáil chosanta IP65 nó níos airde. Seo na modhanna cur i bhfeidhm sonracha:
1. Roghnaigh Próiseas Séalaithe Ard-Iontaofachta
|
Modh Shéalaithe |
Cásanna Iníoctha |
Príomh-Riachtanais |
|
Greamachán Séalaithe Cré-umha |
Teocht ard-, coinníollacha taise ard- (m.sh., leigheas, múnlú insteallta) |
Úsáideann sé greamachán bunaithe ar cheirmeach le friotaíocht teochta níos mó ná nó cothrom le 600 céim, ag cruthú sraith inslithe dlúth tar éis leigheas. |
|
Dúnadh Miotail (m.sh., brasáil) |
Timpeallachtaí níos déine nó trealamh oibriúcháin fhadtéarmach |
Úsáideann sé táthú arc argóin nó táthú ionduchtaithe chun a chinntiú nach bhfuil poreanna ná scoilteanna sa tháth. |
|
Struchtúr Séalaithe Comhcheangailte |
Cásanna le riachtanais iontaofachta ard |
Double protection with ceramic adhesive and a metal sealing ring, improving long-term stability. |
After sealing, an IP65 or higher protection rating must be achieved to prevent dust and moisture intrusion.
2. Strict Control of Operating Environment
Cleanroom Class: Sealing operations are performed in a cleanroom of <=100,000 class to avoid dust contamination leading to sealing defects;
Humidity Control: Relative humidity <=30% to prevent magnesium oxide powder from absorbing moisture before sealing;
Inert Atmosphere Protection: High-purity nitrogen (oxygen content <100ppm) is introduced during the sealing process to prevent high-temperature oxidation.
For every 10% increase in humidity, the sealant's curing strength decreases by approximately 8%, significantly impacting long-term reliability.
3. Sealing Quality Inspection and Verification
Air Tightness Test: The finished product is subjected to 0.3MPa pressure and held for 30 minutes without leakage;
Moisture Test Verification: After being placed in an environment of 40℃ and 95% RH for 48 hours, the insulation resistance is >=200 MΩ;
X-ray Inspection: Check the sealing area for micropores, misalignment, or insufficient filling.
In practice, X-rays can detect micron-level gaps invisible to the naked eye, making it a mandatory inspection item for high-end applications.
4. Selecting Compliant Service Providers and Standard Materials Prioritize entrusting sealing treatment to units that participated in the formulation of the HG/T 6445-2025 standard, such as:
Liaoning Jiashun Technology; Dashiqiao Meier Magnesium Products; Shanghai Shiye Zhentai Chemical. Original manufacturer-certified sealing materials must be used, and sealing process parameter records and test reports must be obtained to ensure traceability.
