壓鑄高溫模溫機(jī)

壓鑄高溫模溫機(jī)Die casting high temperature mold temperature machine

壓鑄高溫模溫機(jī)
多數(shù)人可能會(huì)認(rèn)為模溫機(jī)只應(yīng)用在塑膠料注塑成型領(lǐng)域，其實(shí)不然模溫機(jī)也應(yīng)用在壓鑄領(lǐng)域，那在壓鑄領(lǐng)域該如何使用模溫機(jī)呢?又體現(xiàn)了哪些優(yōu)點(diǎn)呢?

一、壓鑄行業(yè)正確使用壓鑄高溫模溫機(jī)的方法

壓鑄高溫模溫機(jī)1.在正式壓鑄前，一般用對(duì)模具表面熱模。單單對(duì)模具表面預(yù)熱，容易造成應(yīng)力集中，損害模具，因此，模溫機(jī)應(yīng)當(dāng)在燃?xì)鉄崮Ｇ伴_(kāi)啟至少半個(gè)小時(shí)，以便模具內(nèi)外同時(shí)熱起，模肉產(chǎn)生的應(yīng)力較小，對(duì)模具壽命延長(zhǎng)有好處

壓鑄高溫模溫機(jī)2.。在使用模溫機(jī)前，需要檢查有無(wú)足夠的傳熱介質(zhì)(油或者水)、有無(wú)壓力(即壓力表為零)，若出現(xiàn)異常，機(jī)器不能強(qiáng)行啟動(dòng)，否則會(huì)損壞機(jī)器，甚者造成**事故。

壓鑄高溫模溫機(jī)3.機(jī)器連接模具**次運(yùn)行、停機(jī)較久、換模，要進(jìn)行排氣操作——因?yàn)榭諝馐菬岬?*導(dǎo)體，會(huì)影響到傳導(dǎo)熱量的效果，具體方法如下：

(1) 先將模溫機(jī)的溫度設(shè)定為零度，開(kāi)機(jī)運(yùn)行10分鐘;

(2.)當(dāng)壓力顯示正常后，再加溫至120℃，運(yùn)行20分鐘，進(jìn)行排氣;

(3.)再將溫度調(diào)至壓鑄生產(chǎn)的正常范圍內(nèi)(一般為180℃~300℃)，當(dāng)然，設(shè)定溫度還需要根據(jù)產(chǎn)品工藝要求而定。

(4.)7防止模溫機(jī)出事故需要采取**措施并定期對(duì)模溫機(jī)進(jìn)行保養(yǎng)維護(hù)

4.若有條件的話(huà)，不妨將待生產(chǎn)的模具在下面接上模溫機(jī)熱模，這樣可以節(jié)約額外的工時(shí)，提高效率。

二、排除**隱患的方法：

這里的事故是指機(jī)械故障和**事故。模溫機(jī)用的導(dǎo)熱油屬于有機(jī)物，在一定的條件下，導(dǎo)熱油會(huì)燃燒，而壓鑄工作溫度也較高，為**亮起長(zhǎng)明燈。因此，在使用模溫機(jī)的時(shí)候，必須知道存在哪些隱患并做好相應(yīng)**措施：

1、模溫機(jī)要盡量遠(yuǎn)離熱源(如熔煉爐、保溫爐)，一方面可防止導(dǎo)熱油起火，另一方面防止溫度過(guò)高，模溫機(jī)電子元件過(guò)早老化;

2、模具聯(lián)接必須采用包皮管或絕熱管以防泄漏和能承受溫度和壓力(圖3、溫度超過(guò)245℃時(shí)，只能用金屬導(dǎo)管。一些模溫機(jī)管接處或者管散發(fā)出嗆人的油煙，而模溫機(jī)離爐子非常近，壓鑄合金液體的溫度一般要超過(guò)600℃，容易燃燒失火，是比較危險(xiǎn)的;

4、定期檢查模溫機(jī)外接管路和內(nèi)部管路，確認(rèn)接頭處無(wú)泄漏;

5、切不可用一般的有作介質(zhì)，而要使用熱穩(wěn)定性好的合成導(dǎo)熱油，減少積垢;

6、定期更換導(dǎo)熱油(更換周期根據(jù)導(dǎo)熱油的說(shuō)明書(shū)及供應(yīng)商的建議而定);

7、每次下模后，檢查是否存在機(jī)械故障隱患和電氣、控制是否存在問(wèn)題

三、使用模溫機(jī)在壓鑄工藝體現(xiàn)出的優(yōu)點(diǎn)

在壓鑄工藝中，使用模溫機(jī)常帶來(lái)很多優(yōu)點(diǎn)：

1、延長(zhǎng)模具壽命

2、因使得模具熱分布更均勻，可延長(zhǎng)模具壽命;

3、均勻和平穩(wěn)地預(yù)熱模具，消除應(yīng)力裂紋——模具用火焰預(yù)熱等常造成局部過(guò)熱或間隙水冷形成熱沖擊引起局部?jī)?nèi)應(yīng)力，而使用模溫機(jī)預(yù)熱克服了這一點(diǎn);

4、降低成本模具處于較好的狀態(tài)，維修次數(shù)會(huì)減少;

5.脫模劑用量減少;

6.鑄質(zhì)量穩(wěn)定，可以降低檢查頻率，檢驗(yàn)成本降低;

7.預(yù)熱時(shí)間縮短;

8.模溫恒定并處于工藝要求區(qū)間，液態(tài)金屬不容易粘模;

9.溫度均勻，模具配件磨損小;

10.用導(dǎo)熱油，冷卻通道不生銹、不結(jié)垢，而水冷卻就容易使通道生銹，堵塞。

11、提高生產(chǎn)率:

(1)生產(chǎn)開(kāi)始前，有目的地快速預(yù)熱模具;

(2)生產(chǎn)開(kāi)始時(shí)模溫即恒定，廢品減少—不需要很多模次預(yù)熱低速壓射;

(3)模溫自動(dòng)控制，與生產(chǎn)過(guò)程無(wú)關(guān)，所以鑄件質(zhì)量穩(wěn)定;

(4)生產(chǎn)中斷重啟，廢品減少——模具會(huì)保持熱穩(wěn)定;

(5) 縮短了節(jié)拍，達(dá)到節(jié)能效果。

12、改善壓鑄技術(shù)

(1)溫控制不依賴(lài)操作人員;

(2.)模具溫度相對(duì)恒定，可以適應(yīng)于壓鑄薄壁鑄件;

(3.)散發(fā)熱量降低，改善生產(chǎn)環(huán)境;

(4)全自動(dòng)化運(yùn)行，模溫可以自動(dòng)控制;

壓鑄實(shí)踐表明，在合金熔煉控制合格的情況下，鑄造缺陷主要由模溫不正常引起，達(dá)安泰的模溫機(jī)可以有效幫助壓鑄工藝控制模溫在合理的范圍之內(nèi)，以獲得上等的鑄件和提高生產(chǎn)效率，讓客戶(hù)滿(mǎn)意，實(shí)現(xiàn)效益的*大化。

Most people may think that the mold temperature machine is only used in the field of plastic injection molding, in fact, the mold temperature is also used in the field of die-casting, die-casting in the field of how to use the mold temperature machine? What are the advantages of it?

First, the die-casting industry, the correct use of die-casting high temperature mold temperature method

Die-casting high-temperature mold temperature machine 1. In the formal die-casting, the general use of mold surface thermal mold. Only the surface of the mold preheating, easy to cause stress concentration, damage to the mold, therefore, the mold temperature machine should be opened in the gas hot mold at least half an hour before the mold inside and outside at the same time heat, mold the stress generated by mold, Extension is good

Die-casting high temperature mold temperature machine 2 Before using the mold temperature machine, you need to check whether there is enough heat transfer medium (oil or water), whether the pressure (that is, the pressure gauge is zero), if abnormal, the machine can not be forced to start, otherwise it will damage the machine, Safety accident.

Die-casting high temperature mold temperature machine 3. Machine connection mold for the first time running, shut down for a long time, for mold, to carry out exhaust operation - because the air is hot bad conductor, will affect the heat conduction effect, the specific method is as follows:

(1) first set the temperature of the mold temperature is set to zero, start running for 10 minutes;

(2.) When the pressure is normal, then heated to 120 ℃, run for 20 minutes, the exhaust;

(3.) and then adjust the temperature to the normal range of die-casting production (usually 180 ℃ ~ 260 ℃), of course, set the temperature also need to be based on product requirements.

(4) 7 to prevent mold temperature accidents need to take safety measures and regular maintenance of mold temperature maintenance

4. If conditions permit, may wish to be produced in the mold below the mold temperature machine mold, so you can save additional work hours, improve efficiency.Second, the exclusion of security risks:

The accident here refers to mechanical failure and safety accident. Mold temperature machine with the heat transfer oil is organic, under certain conditions, the heat transfer oil will burn, and die-casting temperature is also high, for the safety of long light. Therefore, in the use of mold temperature machine, we must know what the hidden dangers and do the appropriate security measures:

1, mold temperature machine as far as possible away from heat sources (such as melting furnace, holding furnace), on the one hand to prevent the heat oil fire, on the other hand to prevent the temperature is too high, mold temperature electronic components premature aging;

2, the mold connection must use the foreskin tube or adiabatic tube to prevent leakage and can withstand temperature and pressure (Figure 3, the temperature exceeds 245 ℃, can only use metal pipe. Some mold temperature pipe joints or tube issued a choking Soot, and mold temperature machine from the furnace is very close, die-casting alloy liquid temperature generally more than 600 ℃, easy to burn fire, is more dangerous;

4, regular inspection mold outside the pipeline and internal piping, to confirm no leakage at the joint;

5, must not use the general medium, but to use good thermal stability of the synthesis of heat transfer oil to reduce fouling;

6, the regular replacement of heat transfer oil (replacement cycle according to the instructions of the heat transfer oil and the recommendations of the supplier);

7, each time after the mold, check for the existence of mechanical hazards and electrical control, whether there is a problem

Third, the use of mold temperature in the die-casting process reflects the advantages

In the die-casting process, the use of mold temperature machine often bring a lot of advantages:

1, to extend the die life

2, because the mold heat distribution is more uniform, can extend the die life;

3, uniform and smooth preheating mold, to eliminate stress cracks - mold with warm preheating and so often caused by local overheating or interstitial water cooling caused by thermal shock caused by local stress, and the use of mold temperature preheat to overcome this;

4, reduce the cost of mold in a better state, the number of maintenance will be reduced;

5. Reduce the amount of release agent;

6. Casting quality and stability, can reduce the check frequency, test cost reduction;

7. Warming time is shortened;

8. Mold temperature is constant and in the process requirements range, liquid metal is not easy to stick mold;

9. Temperature uniformity, mold parts wear small;

10. With the heat transfer oil, cooling channel does not rust, no scaling, and water cooling is easy to make the channel rust, plug.

11, to improve productivity:

(1) before the start of production, the purpose of rapid preheating mold;

(2) the mold temperature at the beginning of the production is constant, waste reduction - do not need a lot of mold preheating low-speed injection;

(3) mold temperature automatic control, and the production process has nothing to do, so the casting quality and stability;

(4) production interrupt restart, waste reduction - mold will remain thermally stable;

(5) shorten the beat, to achieve energy saving effect.

12, to improve the die-casting technology

(1) temperature control does not depend on the operator;

(2.) mold temperature is relatively constant, can be adapted to die-casting thin-walled castings;

(3.) to reduce the heat to reduce the production environment;

(4) fully automated operation, mold temperature can be automatically controlled;

Die casting practice shows that in the case of alloy smelting control qualified, casting defects are mainly caused by the mold temperature is not normal, the extension of the mold temperature machine can effectively help die casting process control mold temperature within a reasonable range to obtain high-quality castings And improve production efficiency, customer satisfaction, to achieve maximum efficiency.