井口篦子模具

   鑄鐵井蓋在馬路上的應(yīng)用是非常常見(jiàn)的，保證著我們的行駛安全，匯淀井蓋今天就來(lái)跟大家講講關(guān)于鑄鐵井蓋安裝的注意點(diǎn)。

1．選用鑄鐵井蓋的內(nèi)徑（或內(nèi)長(zhǎng)X寬）一定要大于等于預(yù)留井口尺寸，否則將大大影響承載力；

2．在安裝時(shí)井座與混凝土地面結(jié)合面一定要貼實(shí)，不得有懸空的地方，否則在施工安裝中會(huì)被壓路機(jī)壓壞和影響使用壽命；

3．在瀝青路面上安裝鑄鐵井蓋時(shí)，一定要注意避免施工機(jī)械直接碾壓井座，在路面施工時(shí)，應(yīng)在路面預(yù)留比井座略大的孔，在瀝青鋪完后安置。不知道大家有沒(méi)有注意過(guò)，近年來(lái)大街上丟井蓋的案件越來(lái)越少了。這固然要?dú)w功于社會(huì)治安的持續(xù)進(jìn)步，但另一方面，“井蓋科技”的進(jìn)步也不可小覷。

澆注位置的確定原則

a) 澆注時(shí)主要加工表面，主要工作面和受力面應(yīng)盡量放在底部和側(cè)面，以防止產(chǎn)生砂眼，氣孔，夾渣等缺陷。
b) 對(duì)于凝固體收縮較大的鑄件合金，應(yīng)滿(mǎn)足順序凝固的原則，鑄件厚實(shí)部分應(yīng)盡可能置于上方，利于冒口補(bǔ)縮。Grate mould

The application of cast iron well cover on the road is very common, which ensures our driving safety. Huidian well cover will talk about the points for attention about the installation of cast iron well cover today.

1. The inner diameter (or inner length x width) of cast iron manhole cover must be greater than or equal to the reserved wellhead size, otherwise it will greatly affect the bearing capacity;

2. During the installation, the joint surface between the well base and the concrete ground must be close, and there shall be no hanging place, otherwise, it will be crushed by the roller and affect the service life during the construction and installation;

3. When installing the cast iron well cover on the asphalt pavement, it is necessary to avoid the construction machinery directly rolling the well base. During the pavement construction, the hole slightly larger than the well base shall be reserved on the pavement and placed after the asphalt pavement is completed. I don't know if you've noticed that in recent years, there have been fewer and fewer cases of lost manhole covers on the street. This is due to the continuous progress of social security, but on the other hand, the progress of "well cover technology" cannot be underestimated.

Determination principle of pouring position

a) During pouring, the main processing surface, main working surface and stress surface shall be placed at the bottom and side as far as possible to prevent sand holes, air holes, slag inclusions and other defects.

b) For the casting alloy with large shrinkage, it should meet the principle of sequential solidification, and the thick part of the casting should be placed on the top as much as possible to facilitate riser feeding.