PPH儲(chǔ)罐生產(chǎn)廠家在儲(chǔ)罐的制造和施工方面，各種大型PPH儲(chǔ)罐的施工方法，近幾年我國(guó)的PPH儲(chǔ)罐生產(chǎn)廠家也在不斷發(fā)展。下面詳細(xì)介紹下PPH儲(chǔ)罐的焊接技術(shù)

   （1）埋弧自動(dòng)橫焊技術(shù)國(guó)內(nèi)經(jīng)過十多年的攻關(guān)，已取得了突破性進(jìn)展，單絲埋弧焊技術(shù)已基本成熟，操作簡(jiǎn)單，焊接質(zhì)量穩(wěn)定，將在大型儲(chǔ)罐焊接中發(fā)揮重要作用。今后，要開展雙絲或多絲埋弧橫焊技術(shù)的研究，進(jìn)一步提高焊接效率。

   （2）在大型儲(chǔ)罐的自動(dòng)焊設(shè)備與焊材方面，國(guó)產(chǎn)化程度還不夠高，特別是與引進(jìn)的高強(qiáng)鋼板相匹配的自動(dòng)

   （3）用于縱縫焊接的氣電立焊的研究，國(guó)內(nèi)尚處于起步階段。應(yīng)研究開發(fā)用于儲(chǔ)罐縱縫焊接的氣電立焊技術(shù)，實(shí)現(xiàn)國(guó)產(chǎn)化，對(duì)打破國(guó)外技術(shù)壟斷，減少工程成本，滿足儲(chǔ)罐建設(shè)的需要具有重要意義。此外，應(yīng)解決目前所采用的氣電立焊的焊機(jī)結(jié)構(gòu)改造，使之能適用于儲(chǔ)罐倒裝施工工藝，進(jìn)一步提高拱頂儲(chǔ)罐的焊接質(zhì)量和建造速度，縮短施工周期，提高經(jīng)濟(jì)效益。

   （4）倒裝儲(chǔ)罐埋弧自動(dòng)橫焊的研究和應(yīng)用歷史不長(zhǎng)，還有許多問題需要解決。

   （5）CO2半自動(dòng)氣體保護(hù)焊接技術(shù)相對(duì)于傳統(tǒng)的焊條電弧焊無疑有著優(yōu)勢(shì)，但這種方法要大面積推廣應(yīng)用在室外，還有許多問題需要解決。一是輔助配套機(jī)具要輕便、靈活，配線要有足夠的長(zhǎng)度。根據(jù)不同的焊件或部位，要研制相應(yīng)的防風(fēng)輔助裝置等。可以預(yù)測(cè)，pph儲(chǔ)罐生產(chǎn)廠家的焊接技術(shù)的發(fā)展趨勢(shì)在石油化工等焊接優(yōu)先域具有較好的應(yīng)用前景。

   （6）藥芯焊絲的氣體保護(hù)焊將是大型pph儲(chǔ)罐生產(chǎn)廠家建造的發(fā)展方向。在低溫儲(chǔ)罐焊接中，采用自動(dòng)焊有利于保證熱影響區(qū)低溫沖擊性能的穩(wěn)定。

   （7）自保護(hù)藥芯焊絲半自動(dòng)焊成功用于大口徑長(zhǎng)輸管道的焊接。這種方法焊接效率高，質(zhì)量好，抗風(fēng)能力強(qiáng)，適合野外環(huán)境下的焊接作業(yè)，也是今后大型pph儲(chǔ)罐生產(chǎn)廠家建造應(yīng)深入研究應(yīng)用的焊接方法。

PPH tank manufacturers in the tank manufacturing and construction, a variety of large PPH tank construction methods, in recent years, China's PPH tank manufacturers are also developing. The following is a detailed description of PPH tank welding technology

(1) Submerged arc automatic horizontal welding technology has made breakthroughs after more than ten years of research in China. Single wire submerged arc welding technology has been basically mature, simple operation, stable welding quality, and will play an important role in the welding of large storage tanks. In the future, double or multi - wire submerged arc welding technology should be studied to further improve welding efficiency.

(2) In the automatic welding equipment and welding materials of large storage tanks, the degree of localization is not high enough, especially the automatic matching with the introduction of high strength steel plate

(3) The research of gas-electric vertical welding for longitudinal seam welding is still in its infancy in China. It is of great significance to study and develop gas-electric vertical welding technology for longitudinal seam welding of storage tanks to realize localization, break foreign technological monopoly, reduce engineering cost and meet the needs of storage tank construction. In addition, it is necessary to solve the structural transformation of the welding machine used in the current gas-electric vertical welding, so that it can be applied to the inverted construction technology of the storage tank, and further improve the welding quality and construction speed of the vault storage tank, shorten the construction period, and improve the economic benefit.

(4) The research and application of automatic submerged arc welding for inverted storage tanks is not long, and there are still many problems to be solved.

(5) CO2 semi-automatic gas shielded welding technology undoubtedly has advantages over traditional electrode arc welding, but there are still many problems to be solved if this method is to be widely promoted and applied outdoors. It is auxiliary form a complete set machine is provided want deft, flexible, wiring should have enough length. According to different welding parts or parts, to develop the corresponding windproof auxiliary devices. It can be predicted that the development trend of PPH tank manufacturers' welding technology has a good application prospect in the welding priority fields such as petrochemical industry.

(6) Gas shielded welding of flux cored wire will be the development direction of large-scale PPH tank manufacturers. In the welding of low temperature storage tank, the use of automatic welding is beneficial to ensure the stability of low temperature impact performance of heat affected zone.

(7) Semi-automatic welding of self-protecting flux-cored wire is successfully used for welding of large-diameter long-distance pipeline. This method has high welding efficiency, good quality and strong wind resistance, which is suitable for welding in the field environment. It is also a welding method that should be further studied and applied in the construction of large-scale PPH tank manufacturers in the future.