Kekerasan rawatan haba acuan adalah indeks sifat mekanikal yang sangat penting, dan kekerasan yang tidak memenuhi syarat adalah kecacatan yang sangat serius. Kekerasan yang tidak mencukupi atau kekerasan yang tidak sekata selepas rawatan haba akan mengurangkan rintangan haus dan kekuatan keletihan acuan, lead to early failure of the mould, and seriously reduce the service life of the mould.
- Untuk memastikan bahagian siap adalah berkualiti
1) The cross-section of the mould is large and the hardenability of the steel is poor. Sebagai contoh, the steel with low hardenability is selected for the large-scale mould.
2) Carbide segregation is serious or coarse in the original structure of die steel. Graphite carbon and carbide segregation and aggregation exist in the steel.
3) The forging process of the mould is incorrect, and no good spheroidizing annealing is carried out after forging, resulting in poor spheroidizing structure of the mould steel.
4) The decarburization layer on the surface of the mould is not removed by annealing or quenching heating.
5) Excessive quenching temperature and excessive retained austenite after quenching, or too low quenching temperature and insufficient heating and holding time make the phase transformation of mould steel incomplete.
6) After quenching and heating, the cooling speed of the mould is too slow, the grading and isothermal temperature are too high or the time is too long, and the selection of quenching cooling medium is inappropriate.
7) too little water in alkali bath or too much impurity in quenching cooling medium or aging of quenching cooling medium.
8) Temperature is too high and cooling is insufficient when the quenching cooling medium is released after quenching and cooling of the mould.
9) insufficient tempering and high tempering temperature.
- Countermeasures
1) Correct selection of mould steel, large-scale mould should choose high alloy mould steel with high hardenability.
2) Strengthen the inspection of raw materials to ensure that raw materials meet the standards. Reasonable forging and spheroidizing annealing are carried out on the steel with bad raw materials to ensure good structure. Carbon tool steels are not easily annealed many times to prevent graphitization.
3) Strict implementation of forging and spheroidizing annealing processes to ensure a good preparation of heat treatment structure.
4) Before heat treatment, rust spots and oxide scales on the surface of the mould should be thoroughly removed, and attention should be paid to the protection during heating. Vacuum heating quenching or protective atmosphere heating quenching should be adopted as far as possible, and good deoxidization treatment should be carried out when salt bath heating.
5) Correctly formulate the process parameters of quenching and heating of the die to ensure that the phase transformation is sufficient and the cooling speed is faster than the critical cooling speed to obtain qualified metallographic structure.
6) Correct selection of quenching medium and cooling mode, strict control of classification and isothermal temperature and time.
7) The water content of alkali bath should be strictly controlled. The quenching cooling medium used for a long time should be filtered and replaced regularly, and kept clean. The quenching cooling characteristic curve should be tested regularly.
8) For large-sized moulds, the time of immersion in quenching cooling medium should be prolonged to prevent the temperature of quenching cooling medium from being too high.
9) Selepas pelindapkejutan, the mould should be tempered promptly and sufficiently, and the tempering temperature should be prevented from being too high.
10) The mould with high hardness requirement can be treated by cryogenic treatment (cth. – 110 ~196 C).
11) Surface strengthening.
JasonMould Industrial Company Limited, ditubuhkan di 2010, adalah yang terkemuka Kilang acuan China. JasonMould pakar dalam pengeluaran acuan plastik untuk perkakas rumah, peralatan perubatan, peralatan elektronik, peralatan keselamatan dan juga sistem pemantauan.
Syarikat telah berakhir 15000 kilang meter persegi. Dengan bahagian alat suntikan plastik yang mempunyai jentera dan kepakaran yang berbeza, JasonMould menawarkan alat dari bahagian telefon bimbit kecil dan tepat hingga bahagian automotif. Alat kami terutama dieksport ke A.S., Eropah, Jepun dan UK. Strategi kepelbagaian dan perkhidmatan penuh JasonMould telah mendapat pujian daripada pelanggan di seluruh dunia.
Misi kami adalah untuk menyediakan produk dan perkhidmatan pengacuan berkualiti tinggi kepada pelanggan kami. Kami berhasrat untuk melebihi jangkaan harga pelanggan, kualiti dan penghantaran tepat pada masanya. Untuk mencapai misi kita, JasonMould:
- Berkomitmen untuk terus meningkatkan kemahiran dan kecekapan pekerja,
- Menyediakan pekerja kami persekitaran kerja yang bersih dan selamat,
- Meningkatkan teknologi mesin dan peralatan sokongan melalui program penyelenggaraan yang ketat, dan
- Mengekalkan perkakas pelanggan ke tahap prestasi tertinggi
Untuk maklumat lanjut Kos pengacuan suntikan China,sila lawati https://www.jasonmolding.com/
Hubungi Pertanyaan:
Hubungi orang: James Yuan
Nama syarikat: JasonMould Industrial Company Limited
Alamat: Kampung LongGang,Bandar LongXi,Daerah BoLuo,Bandar HuiZhou,Wilayah GuangDong, China
Telefon: 86-752-6682869
E-mel: [email protected]
Laman web: https://www.jasonmolding.com
